{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2024-56616",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-56616",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-12-27T14:51:21.009Z",
    "updatedAt": "2026-05-11T20:55:54.603Z",
    "importedAt": "2026-10-24T01:57:20.494Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "drm/dp_mst: Fix MST sideband message body length check",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/dp_mst: Fix MST sideband message body length check\n\nFix the MST sideband message body length check, which must be at least 1\nbyte accounting for the message body CRC (aka message data CRC) at the\nend of the message.\n\nThis fixes a case where an MST branch device returns a header with a\ncorrect header CRC (indicating a correctly received body length), with\nthe body length being incorrectly set to 0. This will later lead to a\nmemory corruption in drm_dp_sideband_append_payload() and the following\nerrors in dmesg:\n\n   UBSAN: array-index-out-of-bounds in drivers/gpu/drm/display/drm_dp_mst_topology.c:786:25\n   index -1 is out of range for type 'u8 [48]'\n   Call Trace:\n    drm_dp_sideband_append_payload+0x33d/0x350 [drm_display_helper]\n    drm_dp_get_one_sb_msg+0x3ce/0x5f0 [drm_display_helper]\n    drm_dp_mst_hpd_irq_handle_event+0xc8/0x1580 [drm_display_helper]\n\n   memcpy: detected field-spanning write (size 18446744073709551615) of single field \"&msg->msg[msg->curlen]\" at drivers/gpu/drm/display/drm_dp_mst_topology.c:791 (size 256)\n   Call Trace:\n    drm_dp_sideband_append_payload+0x324/0x350 [drm_display_helper]\n    drm_dp_get_one_sb_msg+0x3ce/0x5f0 [drm_display_helper]\n    drm_dp_mst_hpd_irq_handle_event+0xc8/0x1580 [drm_display_helper]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "109f91d8b9335b0f3714ef9920eae5a8b21d56af"
            },
            {
              "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "70e7166612f4e6da8d7d0305c47c465d88d037e5"
            },
            {
              "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "780fa184d4dc38ad6c4fded345ab8f9be7a63e96"
            },
            {
              "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c58947a8d4a500902597ee1dbadf0518d7ff8801"
            },
            {
              "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1fc1f32c4a3421b9d803f18ec3ef49db2fb5d5ef"
            },
            {
              "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bd2fccac61b40eaf08d9546acc9fef958bfe4763"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.17",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.17"
            },
            {
              "version": "5.10.233",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.176",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.120",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.66",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.13",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}