rhsa-2022_0592
Vulnerability from csaf_redhat
Published
2022-02-22 09:17
Modified
2024-11-15 14:42
Summary
Red Hat Security Advisory: kpatch-patch security update

Notes

Topic
An update for kpatch-patch 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
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 in eventpoll.c may lead to escalation of privilege (CVE-2020-0466) * kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920) * kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155) * kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330) * kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942) 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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        "text": "An update for kpatch-patch is now available for Red Hat Enterprise Linux 7.\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.",
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          "text": "A flaw was found in the Linux kernel. A logic error in eventpoll.c can cause a use-after-free, leading to a local escalation of privilege with no additional execution privileges. User interaction is not needed for exploitation. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.",
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          "text": "kernel: use after free in eventpoll.c may lead to escalation of privilege",
          "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-2022-0330",
      "cwe": {
        "id": "CWE-281",
        "name": "Improper Preservation of Permissions"
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      "discovery_date": "2022-01-19T00:00:00+00:00",
      "ids": [
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          "category": "description",
          "text": "A random memory access flaw was found in the Linux kernel\u2019s GPU i915 kernel driver functionality in the way a user may run malicious code on the GPU. This flaw allows a local user to crash the system or escalate their privileges on the system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: possible privileges escalation due to missing TLB flush",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "For the Red Hat Enterprise Linux default configuration, the issue occurs only if a local user is running malicious code on GPU. The GPU is used and the user is required to have privileges to access the i915 Intel GPU.",
          "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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          "text": "A use-after-free flaw was found in the Linux kernel\u2019s vmw_execbuf_copy_fence_user function in drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c in vmwgfx. This flaw allows a local attacker with user privileges to cause a privilege escalation problem.",
          "title": "Vulnerability description"
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          "text": "kernel: failing usercopy allows for use-after-free exploitation",
          "title": "Vulnerability summary"
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        {
          "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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      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: failing usercopy allows for use-after-free exploitation"
    }
  ]
}


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