rhsa-2022_8686
Vulnerability from csaf_redhat
Published
2022-11-29 14:01
Modified
2024-11-15 15:01
Summary
Red Hat Security Advisory: kpatch-patch security update

Notes

Topic
An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.4 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): * KVM: cmpxchg_gpte can write to pfns outside the userspace region (CVE-2022-1158) 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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  "vulnerabilities": [
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      "acknowledgments": [
        {
          "names": [
            "Qiuhao Li"
          ],
          "organization": "Harbin Institute of Technology"
        },
        {
          "names": [
            "Gaoning Pan",
            "Yongkang Jia"
          ],
          "organization": "Zhejiang University"
        }
      ],
      "cve": "CVE-2022-1158",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "discovery_date": "2022-03-29T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2069793"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in KVM. When updating a guest\u0027s page table entry, vm_pgoff was improperly used as the offset to get the page\u0027s pfn. As vaddr and vm_pgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel, resulting in a denial of service condition.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region",
          "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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          "category": "self",
          "summary": "Canonical URL",
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        {
          "category": "external",
          "summary": "RHBZ#2069793",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2069793"
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          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2022-1158",
          "url": "https://www.cve.org/CVERecord?id=CVE-2022-1158"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2022-1158",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-1158"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2022/04/08/4",
          "url": "https://www.openwall.com/lists/oss-security/2022/04/08/4"
        }
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      "release_date": "2022-04-07T15:00:00+00:00",
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          "category": "vendor_fix",
          "date": "2022-11-29T14:01:52+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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      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region"
    }
  ]
}


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