rhsa-2018_0654
Vulnerability from csaf_redhat
Published
2018-04-10 03:34
Modified
2024-09-16 00:48
Summary
Red Hat Security Advisory: kernel-alt security, bug fix, and enhancement update
Notes
Topic
An update for kernel-alt is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
The kernel-alt packages provide the Linux kernel version 4.x.
The following packages have been upgraded to a later upstream version: kernel-alt (4.14.0). (BZ#1492717)
Security Fix(es):
* An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited.
Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to cross the syscall and guest/host boundaries and read privileged memory by conducting targeted cache side-channel attacks. (CVE-2017-5715, Important, ARM)
Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to cross the syscall boundary and read privileged memory by conducting targeted cache side-channel attacks. (CVE-2017-5753, Important, ARM)
Variant CVE-2017-5754 relies on the fact that, on impacted microprocessors, during speculative execution of instruction permission faults, exception generation triggered by a faulting access is suppressed until the retirement of the whole instruction block. In a combination with the fact that memory accesses may populate the cache even when the block is being dropped and never committed (executed), an unprivileged local attacker could use this flaw to read privileged (kernel space) memory by conducting targeted cache side-channel attacks. (CVE-2017-5754, Important, ARM)
* kernel: memory leak when merging buffers in SCSI IO vectors (CVE-2017-12190, Moderate)
* kernel: net: double-free and memory corruption in get_net_ns_by_id() (CVE-2017-15129, Moderate)
* kernel: Incorrect updates of uninstantiated keys crash the kernel (CVE-2017-15299, Moderate)
* kernel: Missing capabilities check in net/netfilter/nfnetlink_cthelper.c allows for unprivileged access to systemwide nfnl_cthelper_list structure (CVE-2017-17448, Moderate)
* kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity (CVE-2017-17449, Moderate)
* kernel: Arbitrary stack overwrite causing oops via crafted signal frame (CVE-2017-1000255, Moderate)
* kernel: Stack information leak in the EFS element (CVE-2017-1000410, Moderate)
* kernel: Race condition in sound system can lead to denial of service (CVE-2018-1000004, Moderate)
* kernel: Buffer overflow in mp_override_legacy_irq() (CVE-2017-11473, Low)
* kernel: Integer overflow in futex.c:futux_requeue can lead to denial of service or unspecified impact (CVE-2018-6927, Low)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Red Hat would like to thank Google Project Zero for reporting CVE-2017-5715, CVE-2017-5753, and CVE-2017-5754; Vitaly Mayatskih for reporting CVE-2017-12190; Kirill Tkhai for reporting CVE-2017-15129; Michael Ellerman, Gustavo Romero, Breno Leitao, Paul Mackerras, and Cyril Bur for reporting CVE-2017-1000255; and Armis Labs for reporting CVE-2017-1000410.
Additional Changes:
See the Red Hat Enterprise Linux 7.5 Release Notes linked from References.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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"text": "The kernel-alt packages provide the Linux kernel version 4.x.\n\nThe following packages have been upgraded to a later upstream version: kernel-alt (4.14.0). (BZ#1492717)\n\nSecurity Fix(es):\n\n* An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited.\n\nVariant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor\u0027s data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to cross the syscall and guest/host boundaries and read privileged memory by conducting targeted cache side-channel attacks. (CVE-2017-5715, Important, ARM)\n\nVariant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor\u0027s data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to cross the syscall boundary and read privileged memory by conducting targeted cache side-channel attacks. (CVE-2017-5753, Important, ARM)\n\nVariant CVE-2017-5754 relies on the fact that, on impacted microprocessors, during speculative execution of instruction permission faults, exception generation triggered by a faulting access is suppressed until the retirement of the whole instruction block. In a combination with the fact that memory accesses may populate the cache even when the block is being dropped and never committed (executed), an unprivileged local attacker could use this flaw to read privileged (kernel space) memory by conducting targeted cache side-channel attacks. (CVE-2017-5754, Important, ARM)\n\n* kernel: memory leak when merging buffers in SCSI IO vectors (CVE-2017-12190, Moderate)\n\n* kernel: net: double-free and memory corruption in get_net_ns_by_id() (CVE-2017-15129, Moderate)\n\n* kernel: Incorrect updates of uninstantiated keys crash the kernel (CVE-2017-15299, Moderate)\n\n* kernel: Missing capabilities check in net/netfilter/nfnetlink_cthelper.c allows for unprivileged access to systemwide nfnl_cthelper_list structure (CVE-2017-17448, Moderate)\n\n* kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity (CVE-2017-17449, Moderate)\n\n* kernel: Arbitrary stack overwrite causing oops via crafted signal frame (CVE-2017-1000255, Moderate)\n\n* kernel: Stack information leak in the EFS element (CVE-2017-1000410, Moderate)\n\n* kernel: Race condition in sound system can lead to denial of service (CVE-2018-1000004, Moderate)\n\n* kernel: Buffer overflow in mp_override_legacy_irq() (CVE-2017-11473, Low)\n\n* kernel: Integer overflow in futex.c:futux_requeue can lead to denial of service or unspecified impact (CVE-2018-6927, Low)\n\nFor more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.\n\nRed Hat would like to thank Google Project Zero for reporting CVE-2017-5715, CVE-2017-5753, and CVE-2017-5754; Vitaly Mayatskih for reporting CVE-2017-12190; Kirill Tkhai for reporting CVE-2017-15129; Michael Ellerman, Gustavo Romero, Breno Leitao, Paul Mackerras, and Cyril Bur for reporting CVE-2017-1000255; and Armis Labs for reporting CVE-2017-1000410.\n\nAdditional Changes:\n\nSee the Red Hat Enterprise Linux 7.5 Release Notes linked from References.",
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"id": "CWE-200",
"name": "Exposure of Sensitive Information to an Unauthorized Actor"
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"ids": [
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"system_name": "Red Hat Bugzilla ID",
"text": "1519778"
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{
"category": "description",
"text": "An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor\u0027s data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to cross the syscall boundary and read privileged memory by conducting targeted cache side-channel attacks.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: cpu: speculative execution bounds-check bypass",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security is aware of this issue. Updates will be released as they become available. For additional information, please refer to the Red Hat Knowledgebase article: https://access.redhat.com/security/vulnerabilities/speculativeexecution",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2017-5753"
},
{
"category": "external",
"summary": "RHBZ#1519778",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1519778"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2017-5753",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-5753"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-5753",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-5753"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/vulnerabilities/speculativeexecution",
"url": "https://access.redhat.com/security/vulnerabilities/speculativeexecution"
},
{
"category": "external",
"summary": "https://googleprojectzero.blogspot.com/2018/01/reading-privileged-memory-with-side.html",
"url": "https://googleprojectzero.blogspot.com/2018/01/reading-privileged-memory-with-side.html"
},
{
"category": "external",
"summary": "https://meltdownattack.com",
"url": "https://meltdownattack.com"
},
{
"category": "external",
"summary": "https://spectreattack.com/",
"url": "https://spectreattack.com/"
}
],
"release_date": "2018-01-03T22:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"restart_required": {
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},
"url": "https://access.redhat.com/errata/RHSA-2018:0654"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.0"
},
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "hw: cpu: speculative execution bounds-check bypass"
},
{
"cve": "CVE-2017-11473",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2017-07-20T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1473209"
}
],
"notes": [
{
"category": "description",
"text": "Buffer overflow in the mp_override_legacy_irq() function in arch/x86/kernel/acpi/boot.c in the Linux kernel through 4.12.2 allows local users to gain privileges via a crafted ACPI table.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: Buffer overflow in mp_override_legacy_irq()",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates of the Red Hat products. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.\n\nThis attack requires \n\n- An attacker to be able to write to the ACPI tables ( local, privileged operation and non generalized attacks)\n- The ability for the attacker to reboot the system ( local, privileged operation )\n- The ACPI table changes to persist through reboots ( not common on cloud/serverless platforms )\n- This modification to the table alone is able to possibly corrupt memory, but the corruption will not be enough alone, the corrupted affected memory will be overwritten with valid acpi struct data which also has to corrupt the memory in which a way the flaw can create abuse (HARD).\n- The attacker will find it significantly difficult to abuse this a flaw in early-boot as injecting code/controlled execution at this point would require privileges. If an attacker had this specific privilege, there are easier ways to gain privilege escalation.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2017-11473"
},
{
"category": "external",
"summary": "RHBZ#1473209",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1473209"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2017-11473",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-11473"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-11473",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-11473"
}
],
"release_date": "2017-07-18T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
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"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "kernel: Buffer overflow in mp_override_legacy_irq()"
},
{
"acknowledgments": [
{
"names": [
"Vitaly Mayatskih"
]
}
],
"cve": "CVE-2017-12190",
"cwe": {
"id": "CWE-400",
"name": "Uncontrolled Resource Consumption"
},
"discovery_date": "2017-09-22T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1495089"
}
],
"notes": [
{
"category": "description",
"text": "It was found that in the Linux kernel through v4.14-rc5, bio_map_user_iov() and bio_unmap_user() in \u0027block/bio.c\u0027 do unbalanced pages refcounting if IO vector has small consecutive buffers belonging to the same page. bio_add_pc_page() merges them into one, but the page reference is never dropped, causing a memory leak and possible system lockup due to out-of-memory condition.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: memory leak when merging buffers in SCSI IO vectors",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5. This is not currently planned to be addressed in future updates of the product due to its life cycle. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.\n\nThis issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6, 7 and MRG-2. Future updates for the respective releases may address this issue.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2017-12190"
},
{
"category": "external",
"summary": "RHBZ#1495089",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1495089"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2017-12190",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-12190"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-12190",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-12190"
}
],
"release_date": "2017-09-21T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"restart_required": {
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"url": "https://access.redhat.com/errata/RHSA-2018:0654"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.2,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H",
"version": "3.0"
},
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: memory leak when merging buffers in SCSI IO vectors"
},
{
"cve": "CVE-2017-12192",
"cwe": {
"id": "CWE-476",
"name": "NULL Pointer Dereference"
},
"discovery_date": "2017-09-19T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1493435"
}
],
"notes": [
{
"category": "description",
"text": "A vulnerability was found in the Key Management sub component of the Linux kernel, where when trying to issue a KEYTCL_READ on a negative key would lead to a NULL pointer dereference. A local attacker could use this flaw to crash the kernel.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: NULL pointer dereference due to KEYCTL_READ on negative key",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5.\n\nThis issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6, 7 and MRG-2.\n\nFuture Linux kernel updates for the respective releases will address this issue.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2017-12192"
},
{
"category": "external",
"summary": "RHBZ#1493435",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1493435"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2017-12192",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-12192"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-12192",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-12192"
},
{
"category": "external",
"summary": "http://seclists.org/oss-sec/2017/q4/63",
"url": "http://seclists.org/oss-sec/2017/q4/63"
}
],
"release_date": "2017-09-18T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"restart_required": {
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"url": "https://access.redhat.com/errata/RHSA-2018:0654"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
},
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: NULL pointer dereference due to KEYCTL_READ on negative key"
},
{
"acknowledgments": [
{
"names": [
"Kirill Tkhai"
]
}
],
"cve": "CVE-2017-15129",
"cwe": {
"id": "CWE-362",
"name": "Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)"
},
"discovery_date": "2017-12-18T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1531174"
}
],
"notes": [
{
"category": "description",
"text": "A use-after-free vulnerability was found in a network namespaces code affecting the Linux kernel since v4.0-rc1 through v4.15-rc5. The function get_net_ns_by_id() does not check for the net::count value after it has found a peer network in netns_ids idr which could lead to double free and memory corruption. This vulnerability could allow an unprivileged local user to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is thought to be unlikely.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: net: double-free and memory corruption in get_net_ns_by_id()",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5 and 6 as the code with the flaw is not present in the products listed.\n\nThis issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 7, its real-time kernel, Red Hat Enterprise MRG 2, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE. Future updates for the respective releases may address this issue.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2017-15129"
},
{
"category": "external",
"summary": "RHBZ#1531174",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1531174"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2017-15129",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-15129"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-15129",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-15129"
}
],
"release_date": "2017-12-19T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"restart_required": {
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"url": "https://access.redhat.com/errata/RHSA-2018:0654"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
"version": "3.0"
},
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: net: double-free and memory corruption in get_net_ns_by_id()"
},
{
"cve": "CVE-2017-15299",
"cwe": {
"id": "CWE-476",
"name": "NULL Pointer Dereference"
},
"discovery_date": "2017-09-29T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1498016"
}
],
"notes": [
{
"category": "description",
"text": "A vulnerability was found in the key management subsystem of the Linux kernel. An update on an uninstantiated key could cause a kernel panic, leading to denial of service (DoS).",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: Incorrect updates of uninstantiated keys crash the kernel",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5 and 6, as the code with the flaw is not present in the products listed.\n\nThis issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and MRG-2. Future updates for the respective releases may address this issue.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2017-15299"
},
{
"category": "external",
"summary": "RHBZ#1498016",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1498016"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2017-15299",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-15299"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-15299",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-15299"
}
],
"release_date": "2017-09-27T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"url": "https://access.redhat.com/errata/RHSA-2018:0654"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
},
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: Incorrect updates of uninstantiated keys crash the kernel"
},
{
"cve": "CVE-2017-15306",
"cwe": {
"id": "CWE-476",
"name": "NULL Pointer Dereference"
},
"discovery_date": "2017-11-06T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1510399"
}
],
"notes": [
{
"category": "description",
"text": "The kvm_vm_ioctl_check_extension function in arch/powerpc/kvm/powerpc.c in the Linux kernel before 4.13.11 allows local users to cause a denial of service (NULL pointer dereference and system crash) via a KVM_CHECK_EXTENSION KVM_CAP_PPC_HTM ioctl call to /dev/kvm.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "Kernel: KVM: oops when checking KVM_CAP_PPC_HTM on PPC platform",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue does not affect the versions of the kernel package as shipped with\nRed Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2017-15306"
},
{
"category": "external",
"summary": "RHBZ#1510399",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1510399"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2017-15306",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-15306"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-15306",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-15306"
}
],
"release_date": "2017-11-06T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"url": "https://access.redhat.com/errata/RHSA-2018:0654"
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],
"scores": [
{
"cvss_v2": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 4.9,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.2,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "Kernel: KVM: oops when checking KVM_CAP_PPC_HTM on PPC platform"
},
{
"cve": "CVE-2017-16939",
"cwe": {
"id": "CWE-416",
"name": "Use After Free"
},
"discovery_date": "2017-11-24T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1517220"
}
],
"notes": [
{
"category": "description",
"text": "The Linux kernel is vulerable to a use-after-free flaw when Transformation User configuration interface(CONFIG_XFRM_USER) compile-time configuration were enabled. This vulnerability occurs while closing a xfrm netlink socket in xfrm_dump_policy_done. A user/process could abuse this flaw to potentially escalate their privileges on a system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "Kernel: ipsec: xfrm: use-after-free leading to potential privilege escalation",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6.\n\nThis issue affects the version of the kernel package as shipped with Red Hat Enterprise Linux 7 and Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise Linux 7 and Red Hat Enterprise MRG 2 may address this issue.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2017-16939"
},
{
"category": "external",
"summary": "RHBZ#1517220",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1517220"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2017-16939",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-16939"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-16939",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-16939"
}
],
"release_date": "2017-11-24T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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{
"cvss_v2": {
"accessComplexity": "HIGH",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 6.2,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:L/AC:H/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.0"
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "Kernel: ipsec: xfrm: use-after-free leading to potential privilege escalation"
},
{
"cve": "CVE-2017-17448",
"cwe": {
"id": "CWE-284",
"name": "Improper Access Control"
},
"discovery_date": "2017-12-14T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1525768"
}
],
"notes": [
{
"category": "description",
"text": "The net/netfilter/nfnetlink_cthelper.c function in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability for new, get, and del operations. This allows local users to bypass intended access restrictions because the nfnl_cthelper_list data structure is shared across all net namespaces.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: Missing capabilities check in net/netfilter/nfnetlink_cthelper.c allows for unprivileged access to systemwide nfnl_cthelper_list structure",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2, as a code with the flaw is not present or is not built in the products listed.\n\nThis issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 7, its real-time kernel, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE. Future Linux kernel updates for the respective releases may address this issue.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2017-17448"
},
{
"category": "external",
"summary": "RHBZ#1525768",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1525768"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2017-17448",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-17448"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-17448",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-17448"
}
],
"release_date": "2017-12-03T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"restart_required": {
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"url": "https://access.redhat.com/errata/RHSA-2018:0654"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 4.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
"version": "3.0"
},
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: Missing capabilities check in net/netfilter/nfnetlink_cthelper.c allows for unprivileged access to systemwide nfnl_cthelper_list structure"
},
{
"cve": "CVE-2017-17449",
"cwe": {
"id": "CWE-284",
"name": "Improper Access Control"
},
"discovery_date": "2017-12-14T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1525762"
}
],
"notes": [
{
"category": "description",
"text": "The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel, through 4.14.4, does not restrict observations of Netlink messages to a single net namespace, when CONFIG_NLMON is enabled. This allows local users to obtain sensitive information by leveraging the CAP_NET_ADMIN capability to sniff an nlmon interface for all Netlink activity on the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 and 6, as a code with the flaw is not present or is not built in the products listed.\n\nThis issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 7, its real-time kernel, Red Hat Enterprise MRG 2, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE. Future Linux kernel updates for the respective releases may address this issue.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2017-17449"
},
{
"category": "external",
"summary": "RHBZ#1525762",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1525762"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2017-17449",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-17449"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-17449",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-17449"
}
],
"release_date": "2017-12-05T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 3.3,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"version": "3.0"
},
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity"
},
{
"acknowledgments": [
{
"names": [
"Breno Leitao",
"Cyril Bur",
"Gustavo Romero",
"Michael Ellerman",
"Paul Mackerras"
]
}
],
"cve": "CVE-2017-1000255",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2017-10-03T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1498067"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s handling of signal frame on PowerPC systems. A malicious local user process could craft a signal frame allowing an attacker to corrupt memory.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: Arbitrary stack overwrite causing oops via crafted signal frame",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue does not affect the Linux kernel and kernel-rt packages as shipped with Red Hat Enterprise Linux 5, 6, and 7.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2017-1000255"
},
{
"category": "external",
"summary": "RHBZ#1498067",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1498067"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2017-1000255",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-1000255"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-1000255",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-1000255"
}
],
"release_date": "2017-10-09T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
"version": "3.0"
},
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],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: Arbitrary stack overwrite causing oops via crafted signal frame"
},
{
"acknowledgments": [
{
"names": [
"Armis Labs"
]
}
],
"cve": "CVE-2017-1000410",
"cwe": {
"id": "CWE-200",
"name": "Exposure of Sensitive Information to an Unauthorized Actor"
},
"discovery_date": "2017-11-30T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1519160"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the processing of incoming L2CAP bluetooth commands. Uninitialized stack variables can be sent to an attacker leaking data in kernel address space.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: Stack information leak in the EFS element",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue does not affect the Linux kernel packages as shipped with Red Hat\nEnterprise Linux 5.\n\nThis issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6, 7, its real-time kernel, Red Hat Enterprise MRG 2, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE. Future Linux kernel updates for the respective releases may address this issue.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2017-1000410"
},
{
"category": "external",
"summary": "RHBZ#1519160",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1519160"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2017-1000410",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-1000410"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-1000410",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-1000410"
}
],
"release_date": "2017-12-06T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"restart_required": {
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},
"url": "https://access.redhat.com/errata/RHSA-2018:0654"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.0"
},
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],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: Stack information leak in the EFS element"
},
{
"cve": "CVE-2018-6927",
"cwe": {
"id": "CWE-190",
"name": "Integer Overflow or Wraparound"
},
"discovery_date": "2018-02-13T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1544612"
}
],
"notes": [
{
"category": "description",
"text": "The futex_requeue function in kernel/futex.c in the Linux kernel, before 4.14.15, might allow attackers to cause a denial of service (integer overflow) or possibly have unspecified other impacts by triggering a negative wake or requeue value. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: Integer overflow in futex.c:futux_requeue can lead to denial of service or unspecified impact",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5. This is not currently planned to be addressed in future updates of the product due to its life cycle. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.\n\nThis issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6, 7, its real-time kernel, Red Hat Enterprise MRG 2, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE. Future Linux kernel updates for the respective releases may address this issue.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2018-6927"
},
{
"category": "external",
"summary": "RHBZ#1544612",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1544612"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2018-6927",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-6927"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-6927",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-6927"
}
],
"release_date": "2018-02-12T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"restart_required": {
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"url": "https://access.redhat.com/errata/RHSA-2018:0654"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 3.3,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"version": "3.0"
},
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"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "kernel: Integer overflow in futex.c:futux_requeue can lead to denial of service or unspecified impact"
},
{
"cve": "CVE-2018-1000004",
"cwe": {
"id": "CWE-362",
"name": "Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)"
},
"discovery_date": "2018-01-17T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1535315"
}
],
"notes": [
{
"category": "description",
"text": "In the Linux kernel versions 4.12, 3.10, 2.6, and possibly earlier, a race condition vulnerability exists in the sound system allowing for a potential deadlock and memory corruption due to use-after-free condition and thus denial of service. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: Race condition in sound system can lead to denial of service",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue affects the version of Linux kernel package as shipped with Red Hat Enterprise Linux 5. This is not currently planned to be addressed in future updates of the product due to its life cycle. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.\n\nThis issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6, 7, its real-time kernel, Red Hat Enterprise MRG 2, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE. Future Linux kernel updates for the respective releases may address this issue.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2018-1000004"
},
{
"category": "external",
"summary": "RHBZ#1535315",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1535315"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2018-1000004",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-1000004"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-1000004",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1000004"
}
],
"release_date": "2018-01-10T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"restart_required": {
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},
"url": "https://access.redhat.com/errata/RHSA-2018:0654"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 4.7,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
},
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]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: Race condition in sound system can lead to denial of service"
}
]
}
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