rhsa-2023_4378
Vulnerability from csaf_redhat
Published
2023-08-01 09:08
Modified
2024-11-06 03:25
Summary
Red Hat Security Advisory: kernel-rt security and bug fix update
Notes
Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 9.
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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)
* kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)
* kernel: KVM: x86/mmu: race condition in direct_page_fault() (CVE-2022-45869)
* kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c (CVE-2023-0458)
* kernel: Spectre v2 SMT mitigations problem (CVE-2023-1998)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
* RHEL9 rt: blktests block/024 failed (BZ#2209920)
* Backport pinned timers RT specific behavior for FIFO tasks (BZ#2210071)
* kernel-rt: update RT source tree to the RHEL-9.2z2 source tree (BZ#2215122)
* kernel-rt: update RT source tree to the RHEL-9.2z2b source tree (BZ#2222796)
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.
{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update for kernel-rt is now available for Red Hat Enterprise Linux 9.\n\nRed 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.", "title": "Topic" }, { "category": "general", "text": "The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.\n\nSecurity Fix(es):\n\n* kernel: ipvlan: out-of-bounds write caused by unclear skb-\u003ecb (CVE-2023-3090)\n\n* kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)\n\n* kernel: KVM: x86/mmu: race condition in direct_page_fault() (CVE-2022-45869)\n\n* kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c (CVE-2023-0458)\n\n* kernel: Spectre v2 SMT mitigations problem (CVE-2023-1998)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nBug Fix(es):\n\n* RHEL9 rt: blktests block/024 failed (BZ#2209920)\n\n* Backport pinned timers RT specific behavior for FIFO tasks (BZ#2210071)\n\n* kernel-rt: update RT source tree to the RHEL-9.2z2 source tree (BZ#2215122)\n\n* kernel-rt: update RT source tree to the RHEL-9.2z2b source tree (BZ#2222796)", "title": "Details" }, { "category": "legal_disclaimer", "text": "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.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2023:4378", "url": "https://access.redhat.com/errata/RHSA-2023:4378" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "2151317", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2151317" }, { "category": "external", "summary": "2187257", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2187257" }, { "category": "external", "summary": "2193219", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2193219" }, { "category": "external", "summary": "2215768", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2215768" }, { "category": "external", "summary": "2218672", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2218672" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_4378.json" } ], "title": "Red Hat Security Advisory: kernel-rt security and bug fix update", "tracking": { "current_release_date": "2024-11-06T03:25:56+00:00", "generator": { "date": "2024-11-06T03:25:56+00:00", "engine": { "name": "Red Hat SDEngine", "version": "4.1.1" } }, "id": "RHSA-2023:4378", "initial_release_date": "2023-08-01T09:08:49+00:00", "revision_history": [ { "date": "2023-08-01T09:08:49+00:00", "number": "1", "summary": "Initial version" }, { 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A race condition in direct_page_fault allows guest OS users to cause a denial of service (host OS crash or host OS memory corruption) when nested virtualization and the TDP MMU are enabled.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: KVM: x86/mmu: race condition in direct_page_fault()", "title": "Vulnerability summary" }, { "category": "other", "text": "The nested virtualization feature is not enabled by default up to Red Hat Enterprise Linux 8.4. Most importantly, Red Hat currently provides nested virtualization only as a Technology Preview and is therefore unsupported for production use. For additional details, please see https://access.redhat.com/solutions/21101 and https://access.redhat.com/support/offerings/techpreview.", "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": { "fixed": [ "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-0:5.14.0-284.25.1.rt14.310.el9_2.src", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-core-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-core-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-debuginfo-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", 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Bugzilla ID", "text": "2193219" } ], "notes": [ { "category": "description", "text": "A vulnerabilty was found in Linux Kernel, where a speculative pointer dereference problem exists in the Linux Kernel on the do_prlimit() function. The resource argument value is controlled and is used in pointer arithmetic for the \u0027rlim\u0027 variable and can be used to leak the contents.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c", "title": "Vulnerability summary" }, { "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": { "fixed": [ "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-0:5.14.0-284.25.1.rt14.310.el9_2.src", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-core-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", 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The kernel failed to protect applications that attempted to protect against Spectre v2 leaving them open to attack from other processes running on the same physical core in another hyperthread.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: Spectre v2 SMT mitigations problem", "title": "Vulnerability summary" }, { "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": { "fixed": [ "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-0:5.14.0-284.25.1.rt14.310.el9_2.src", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-core-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", 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This issue is caused by missing skb-\u003ecb initialization in `__ip_options_echo` and can lead to an out-of-bounds write stack overflow. This may allow a local user to cause a denial of service or potentially achieve local privilege escalation.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: ipvlan: out-of-bounds write caused by unclear skb-\u003ecb", "title": "Vulnerability summary" }, { "category": "other", "text": "Red Hat Enterprise Linux 6 and 7 are not affected by this flaw as they did not include IPVLAN support.", "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": { "fixed": [ "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-0:5.14.0-284.25.1.rt14.310.el9_2.src", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-core-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", 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This issue occurs when sending two TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets with a total size of 252 bytes, which results in an out-of-bounds write when the third packet enters fl_set_geneve_opt, potentially leading to a denial of service or privilege escalation.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()", "title": "Vulnerability summary" }, { "category": "other", "text": "Red Hat Enterprise Linux 6 is not affected by this flaw as it did not include support for the TC flower classifier.", "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": { "fixed": [ "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-0:5.14.0-284.25.1.rt14.310.el9_2.src", 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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.