« Volver al listado

CVE-2026-74362

Estado: RecibidaSin puntuar—

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

ext2: fix ignored return value of generic_write_sync()

Fix ext2_dio_write_iter() to propagate the error returned by generic_write_sync() instead of silently discarding it, which could cause write(2) to return success to userspace on O_SYNC/O_DSYNC files even when the sync failed.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

[JK: Reflect also filemap_write_and_wait() return value]

Detalles técnicos trazas, registros y código del informe original
The correct pattern, already used in ext2_dax_write_iter() in the same
file and in ext4, xfs, f2fs among others, is:
    if (ret > 0)
        ret = generic_write_sync(iocb, ret);

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-2026-74362",
  "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": "fb5de4358e1aa4753dce73c4dc1aca73ff39cedd",
              "lessThan": "8990dbb7065b0b002b1e58b9091a5b61f5e94dbe",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fb5de4358e1aa4753dce73c4dc1aca73ff39cedd",
              "lessThan": "8d70b3973020e59845c0bdad90e0b9c2295fd493",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fb5de4358e1aa4753dce73c4dc1aca73ff39cedd",
              "lessThan": "ffa974b2f50ad8b911b9066d7aed84ad0afabcdb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fb5de4358e1aa4753dce73c4dc1aca73ff39cedd",
              "lessThan": "b6bc07e49a5fbb335f56eb90cd63dec6584c77d3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fb5de4358e1aa4753dce73c4dc1aca73ff39cedd",
              "lessThan": "a4659be0bc7cb1856ffb15b67f903229ae8891ec",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/ext2/file.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.5"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.5",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/ext2/file.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:22:37.783",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/8990dbb7065b0b002b1e58b9091a5b61f5e94dbe",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8d70b3973020e59845c0bdad90e0b9c2295fd493",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a4659be0bc7cb1856ffb15b67f903229ae8891ec",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b6bc07e49a5fbb335f56eb90cd63dec6584c77d3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ffa974b2f50ad8b911b9066d7aed84ad0afabcdb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next2: fix ignored return value of generic_write_sync()\n\nFix ext2_dio_write_iter() to propagate the error returned by\ngeneric_write_sync() instead of silently discarding it, which could\ncause write(2) to return success to userspace on O_SYNC/O_DSYNC files\neven when the sync failed.\n\nThe correct pattern, already used in ext2_dax_write_iter() in the same\nfile and in ext4, xfs, f2fs among others, is:\n    if (ret > 0)\n        ret = generic_write_sync(iocb, ret);\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.\n\n[JK: Reflect also filemap_write_and_wait() return value]"
    }
  ],
  "lastModified": "2026-08-17T06:19:30.960",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}