{
  "cveId": "CVE-2026-53910",
  "url": "https://patchblox.com/security/cve/CVE-2026-53910",
  "summary": "CVE-2026-53910 is fixed in diffutils on 1 platform, first by diffutils 1:3.6-1ubuntu0.1~esm1, released July 22, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "diffutils: diff3\u00A0tool from GNU diffutils\u00A0is vulnerable to a heap\u2011based buffer overflow due to multiple signed integer overflows...",
  "description": "diff3\u00A0tool from GNU diffutils\u00A0is vulnerable to a heap\u2011based buffer overflow due to multiple signed integer overflows in line\u2011mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds. When processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out\u2011of\u2011bounds writes during internal processing. An attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment. This issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 NOTE: The project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.",
  "published": "2026-07-22T07:17:00Z",
  "severity": "Medium",
  "epss": 0.00291,
  "epssPercentile": 0.21878,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "diffutils",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:3.6-1ubuntu0.1~esm1",
      "fix": "diffutils 1:3.6-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-diffutils-1-3.6-1ubuntu0.1-esm1",
      "released": "2026-07-22T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "diffutils",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:3.7-3ubuntu0.1~esm1",
      "fix": "diffutils 1:3.7-3ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-diffutils-1-3.7-3ubuntu0.1-esm1",
      "released": "2026-07-22T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "diffutils",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1:3.8-0ubuntu2.1",
      "fix": "diffutils 1:3.8-0ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-diffutils-1-3.8-0ubuntu2.1",
      "released": "2026-07-22T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "diffutils",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1:3.10-1ubuntu0.1",
      "fix": "diffutils 1:3.10-1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-diffutils-1-3.10-1ubuntu0.1",
      "released": "2026-07-22T07:17:00Z"
    },
    {
      "platform": "linux",
      "product": "diffutils",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:3.12-1ubuntu0.1",
      "fix": "diffutils 1:3.12-1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-diffutils-1-3.12-1ubuntu0.1",
      "released": "2026-07-22T07:17:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T19:38:12Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}