rhsa-2023_4698
Vulnerability from csaf_redhat
Published
2023-08-22 14:09
Modified
2024-09-13 18:52
Summary
Red Hat Security Advisory: kpatch-patch security update

Notes

Topic
An update for kpatch-patch is now available for Red Hat Enterprise Linux 7.7 Update Services for SAP Solutions. 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: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788) 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": [
    {
      "cve": "CVE-2023-35788",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "discovery_date": "2023-06-17T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2215768"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the TC flower classifier (cls_flower) in the Networking subsystem of the Linux kernel. 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": {
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2023-35788"
        },
        {
          "category": "external",
          "summary": "RHBZ#2215768",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2215768"
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        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-35788",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-35788"
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        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-35788",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-35788"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2023/06/07/1",
          "url": "https://www.openwall.com/lists/oss-security/2023/06/07/1"
        }
      ],
      "release_date": "2023-05-29T00:00:00+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",
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          "restart_required": {
            "category": "none"
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          "url": "https://access.redhat.com/errata/RHSA-2023:4698"
        },
        {
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            "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",
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        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()"
    }
  ]
}


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