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drm/log: Fix out-of-bounds read on empty message length

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: drm/log: Fix out-of-bounds read on empty message length drm_log_draw_kmsg_record() accesses s[len - 1] to strip the trailing newline, but len is unsigned int. If len is 0, the subtraction wraps to UINT_MAX, causing an out-of-bounds read. Add an early return when len is 0.

Products
Kernel
Affected versions
Not specified
Fixed versions
6.18.46, 7.1.10
CVEs
CVE-2026-80741
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 03:52 UTC · Revision 1

Source evidence

drm/log: Fix out-of-bounds read on empty message length

core-osv · Original source

Published 3 Sept 2026, 08:26 UTC

In the Linux kernel, the following vulnerability has been resolved: drm/log: Fix out-of-bounds read on empty message length drm_log_draw_kmsg_record() accesses s[len - 1] to strip the trailing newline, but len is unsigned int. If len is 0, the subtraction wraps to UINT_MAX, causing an out-of-bounds read. Add an early return when len is 0.

osv:CVE-2026-80741

Kernel

Fixed versions: 6.18.46, 7.1.10

Complete source record
{
  "id": "7e1ba5663c04d862ef4b975ae9616a81fb03dea60abe174fd567a2cac635ce0e",
  "url": "https://osv.dev/vulnerability/CVE-2026-80741",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/log: Fix out-of-bounds read on empty message length",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/log: Fix out-of-bounds read on empty message length drm_log_draw_kmsg_record() accesses s[len - 1] to strip the trailing newline, but len is unsigned int. If len is 0, the subtraction wraps to UINT_MAX, causing an out-of-bounds read. Add an early return when len is 0.",
    "evidence": "osv:CVE-2026-80741",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.18.46",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.1.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-80741",
      "aliases": [
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      "metrics": [
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          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
        }
      ],
      "affected": [
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                {
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                {
                  "fixed": "16bcea56f4205314ec2aa04a7ec74e5261d253c7"
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          }
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        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.14.0"
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                {
                  "fixed": "6.18.46"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.1.10"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80741.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.856913506Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/16a2716910ecf7d31bf3c033ee7c506a0b00b2ee",
        "https://git.kernel.org/stable/c/16bcea56f4205314ec2aa04a7ec74e5261d253c7",
        "https://git.kernel.org/stable/c/60baa179ed1333535f6e2da4133511db55278ee4",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80741.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-80741",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80741.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-80741",
        "evidence": "/id"
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    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 500146,
  "published_at": "2026-09-03T08:26:25.322+00:00"
}