GHSA-MQQF-4P7R-RF89

Vulnerability from github – Published: 2024-04-04 15:30 – Updated: 2025-08-04 21:30
VLAI
Details

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIGetSelectedEvents() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.

Severity
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2024-31080"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-126"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-04T14:15:10Z",
    "severity": "HIGH"
  },
  "details": "A heap-based buffer over-read vulnerability was found in the X.org server\u0027s ProcXIGetSelectedEvents() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker\u0027s inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.",
  "id": "GHSA-mqqf-4p7r-rf89",
  "modified": "2025-08-04T21:30:37Z",
  "published": "2024-04-04T15:30:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-31080"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P73U4DAAWLFZAPD75GLXTGMSTTQWW5AP"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EBLQJIAXEDMEGRGZMSH7CWUJHSVKUWLV"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6TF7FZXOKHIKPZXYIMSQXKVH7WITKV3V"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/04/msg00009.html"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2271997"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2024-31080"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2025:12751"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:9122"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:9093"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:3343"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:3261"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:3258"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:2616"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:2080"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:2042"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:2041"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:2040"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:2039"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:2038"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:2037"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:2036"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:1785"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2024/04/03/13"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2024/04/12/10"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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