rhsa-2023_1435
Vulnerability from csaf_redhat
Published
2023-03-23 09:06
Modified
2024-11-06 02:39
Summary
Red Hat Security Advisory: kpatch-patch security update
Notes
Topic
An update for kpatch-patch is now available for Red Hat Enterprise Linux 9.0 Extended Update Support.
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
This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.
Security Fix(es):
* kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c (CVE-2022-3564)
* kernel: stack overflow in do_proc_dointvec and proc_skip_spaces (CVE-2022-4378)
* kernel: use-after-free in __nfs42_ssc_open() in fs/nfs/nfs4file.c leading to remote Denial of Service attack (CVE-2022-4379)
* kernel: Netfilter integer overflow vulnerability in nft_payload_copy_vlan (CVE-2023-0179)
* ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266)
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.
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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"category": "impact",
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],
"title": "kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c"
},
{
"cve": "CVE-2022-4378",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2022-12-12T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2152548"
}
],
"notes": [
{
"category": "description",
"text": "A stack overflow flaw was found in the Linux kernel\u0027s SYSCTL subsystem in how a user changes certain kernel parameters and variables. This flaw allows a local user to crash or potentially escalate their privileges on the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: stack overflow in do_proc_dointvec and proc_skip_spaces",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "To trigger this issue, the user needs some privileges (for example, access to the sysctl files), but usually less than root or CAP_NET_ADMIN.",
"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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{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2022-4378"
},
{
"category": "external",
"summary": "RHBZ#2152548",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2152548"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2022-4378",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-4378"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2022-4378",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4378"
},
{
"category": "external",
"summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-avoid-integer-type-confusion-in-get_proc_long.patch",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-avoid-integer-type-confusion-in-get_proc_long.patch"
},
{
"category": "external",
"summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-proc_skip_spaces-shouldn-t-think-it-is-working-on-c-strings.patch",
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},
{
"category": "external",
"summary": "https://seclists.org/oss-sec/2022/q4/178",
"url": "https://seclists.org/oss-sec/2022/q4/178"
}
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"release_date": "2022-12-09T10:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2023-03-23T09:06:56+00:00",
"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",
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},
{
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"text": "kernel: use-after-free in __nfs42_ssc_open() in fs/nfs/nfs4file.c leading to remote Denial of Service attack",
"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.",
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{
"cve": "CVE-2023-0179",
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"text": "A buffer overflow vulnerability was found in the Netfilter subsystem in the Linux Kernel. This issue could allow the leakage of both stack and heap addresses, and potentially allow Local Privilege Escalation to the root user via arbitrary code execution.",
"title": "Vulnerability description"
},
{
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"text": "kernel: Netfilter integer overflow vulnerability in nft_payload_copy_vlan",
"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"
}
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"date": "2023-03-23T09:06:56+00:00",
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"title": "kernel: Netfilter integer overflow vulnerability in nft_payload_copy_vlan"
},
{
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"cwe": {
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"name": "Use After Free"
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"ids": [
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"text": "A use-after-free flaw was found in snd_ctl_elem_read in sound/core/control.c in Advanced Linux Sound Architecture (ALSA) subsystem in the Linux kernel. In this flaw a normal privileged, local attacker may impact the system due to a locking issue in the compat path, leading to a kernel information leak problem.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF",
"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"
}
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"date": "2023-03-23T09:06:56+00:00",
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"details": "To mitigate this issue, skip loading (blacklist) the affected soundcard using modules like:\n\nblacklist soundcore\nblacklist snd\nblacklist snd_pcm\nblacklist snd_hda_codec_hdmi\nblacklist snd_hda_codec_realtek\nblacklist snd_hda_codec_generic\nblacklist snd_hda_intel\nblacklist snd_hda_codec\nblacklist snd_hda_core\nblacklist snd_hwdep\nblacklist snd_timer\n \nonto the system till we have a fix available. \n\nThis can be done by a blacklist mechanism, this will ensure the driver is not loaded at the boot time.\n~~~\nHow do I blacklist a kernel module to prevent it from loading automatically?\nhttps://access.redhat.com/solutions/41278 \n~~~",
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"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"threats": [
{
"category": "exploit_status",
"date": "2023-03-30T00:00:00+00:00",
"details": "CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
},
{
"category": "impact",
"details": "Important"
}
],
"title": "ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF"
}
]
}
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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.