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CVE-2022-50839

Estado: AplazadaSin puntuar—

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

jbd2: fix potential buffer head reference count leak

As in 'jbd2_fc_wait_bufs' if buffer isn't uptodate, will return -EIO without update 'journal->j_fc_off'. But 'jbd2_fc_release_bufs' will release buffer head from ‘j_fc_off - 1’ if 'bh' is NULL will terminal release which will lead to buffer head buffer head reference count leak. To solve above issue, update 'journal->j_fc_off' before return -EIO.

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)

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{
  "id": "CVE-2022-50839",
  "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": "ff780b91efe901b8eecd8114785abae5341820ad",
              "lessThan": "7a33dde572fceb45d02d188e0213c47059401c93",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ff780b91efe901b8eecd8114785abae5341820ad",
              "lessThan": "e7385c868ee038d6a0cb0e85c22d2741e7910fd5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ff780b91efe901b8eecd8114785abae5341820ad",
              "lessThan": "68ed9c76b2affd47177b92495446abb7262d0ef7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ff780b91efe901b8eecd8114785abae5341820ad",
              "lessThan": "9b073d73725366d886b711b74e058c02f51e7a0e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ff780b91efe901b8eecd8114785abae5341820ad",
              "lessThan": "e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/jbd2/journal.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.10"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.10",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.150",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.75",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/jbd2/journal.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-30T13:15:58.463",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/68ed9c76b2affd47177b92495446abb7262d0ef7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7a33dde572fceb45d02d188e0213c47059401c93",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9b073d73725366d886b711b74e058c02f51e7a0e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e7385c868ee038d6a0cb0e85c22d2741e7910fd5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: fix potential buffer head reference count leak\n\nAs in 'jbd2_fc_wait_bufs' if buffer isn't uptodate, will return -EIO without\nupdate 'journal->j_fc_off'. But 'jbd2_fc_release_bufs' will release buffer head\nfrom ‘j_fc_off - 1’ if 'bh' is NULL will terminal release which will lead to\nbuffer head buffer head reference count leak.\nTo solve above issue, update 'journal->j_fc_off' before return -EIO."
    }
  ],
  "lastModified": "2026-06-17T05:24:16.547",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}