« Volver al listado

CVE-2026-80805

Estado: RecibidaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

xfs: validate attr entry pointer before field access

xfs_attr3_leaf_verify_entry() accesses lentry/rentry fields (namelen, valuelen) before checking if the entry pointer itself is within bounds. If nameidx is crafted to point near the end of the buffer, these field accesses can read out-of-bounds before the bounds check at name_end > buf_end is performed.

Add explicit bounds checks for entry pointers before accessing their fields. Use offsetof() to check that the start of the flexible array member (nameval/name) is within bounds, which ensures all preceding fields are safe to access.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-80805",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "c84760659dcf237902d4cc997cd5f55cb3b2807f",
              "lessThan": "0f82586741e39926542f621bafa424e237a04fa4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c84760659dcf237902d4cc997cd5f55cb3b2807f",
              "lessThan": "134d82a2b5e3eba3ebf58753a1387b22f26ca1de",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c84760659dcf237902d4cc997cd5f55cb3b2807f",
              "lessThan": "03a12253dd2a036545bdb0110a4e0b8dc70f8e7c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c84760659dcf237902d4cc997cd5f55cb3b2807f",
              "lessThan": "e99120b5944a16d0bc27e52b33de78bcdaaabf5c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c84760659dcf237902d4cc997cd5f55cb3b2807f",
              "lessThan": "98a42bb9d60d42898c3494de351a1bf508348cde",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c84760659dcf237902d4cc997cd5f55cb3b2807f",
              "lessThan": "184c1a80421a5b5ddcd262e47980ce2e67fee211",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c84760659dcf237902d4cc997cd5f55cb3b2807f",
              "lessThan": "9f92e749fc08b7ff3d9da190c4d1b2273745b282",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c84760659dcf237902d4cc997cd5f55cb3b2807f",
              "lessThan": "c35da2bac6f7cb9a9be73f188b4fcc324615c327",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c84760659dcf237902d4cc997cd5f55cb3b2807f",
              "lessThan": "b7eea80be25f3334f131d52982b3131aba77b97d",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/xfs/libxfs/xfs_attr_leaf.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.5"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.5",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.267",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.218",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.185",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.154",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.106",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.47",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.11",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.1",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/xfs/libxfs/xfs_attr_leaf.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-04T16:18:07.510",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/03a12253dd2a036545bdb0110a4e0b8dc70f8e7c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/0f82586741e39926542f621bafa424e237a04fa4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/134d82a2b5e3eba3ebf58753a1387b22f26ca1de",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/184c1a80421a5b5ddcd262e47980ce2e67fee211",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/98a42bb9d60d42898c3494de351a1bf508348cde",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9f92e749fc08b7ff3d9da190c4d1b2273745b282",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b7eea80be25f3334f131d52982b3131aba77b97d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c35da2bac6f7cb9a9be73f188b4fcc324615c327",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e99120b5944a16d0bc27e52b33de78bcdaaabf5c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: validate attr entry pointer before field access\n\nxfs_attr3_leaf_verify_entry() accesses lentry/rentry fields (namelen,\nvaluelen) before checking if the entry pointer itself is within bounds.\nIf nameidx is crafted to point near the end of the buffer, these field\naccesses can read out-of-bounds before the bounds check at\nname_end > buf_end is performed.\n\nAdd explicit bounds checks for entry pointers before accessing their\nfields. Use offsetof() to check that the start of the flexible array\nmember (nameval/name) is within bounds, which ensures all preceding\nfields are safe to access."
    }
  ],
  "lastModified": "2026-09-04T16:18:07.510",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}