FKIE_CVE-2026-23043

Vulnerability from fkie_nvd - Published: 2026-02-04 16:16 - Updated: 2026-06-17 10:20
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix NULL pointer dereference in do_abort_log_replay() Coverity reported a NULL pointer dereference issue (CID 1666756) in do_abort_log_replay(). When btrfs_alloc_path() fails in replay_one_buffer(), wc->subvol_path is NULL, but btrfs_abort_log_replay() calls do_abort_log_replay() which unconditionally dereferences wc->subvol_path when attempting to print debug information. Fix this by adding a NULL check before dereferencing wc->subvol_path in do_abort_log_replay().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/530e3d4af566ca44807d79359b90794dea24c4f3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6d1b61b8e1e44888c643d89225ab819b10649b2e
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/tree-log.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6d1b61b8e1e44888c643d89225ab819b10649b2e",
              "status": "affected",
              "version": "2753e49176240f21e4bb10e03514f99e732704bb",
              "versionType": "git"
            },
            {
              "lessThan": "530e3d4af566ca44807d79359b90794dea24c4f3",
              "status": "affected",
              "version": "2753e49176240f21e4bb10e03514f99e732704bb",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/tree-log.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix NULL pointer dereference in do_abort_log_replay()\n\nCoverity reported a NULL pointer dereference issue (CID 1666756) in\ndo_abort_log_replay(). When btrfs_alloc_path() fails in\nreplay_one_buffer(), wc-\u003esubvol_path is NULL, but btrfs_abort_log_replay()\ncalls do_abort_log_replay() which unconditionally dereferences\nwc-\u003esubvol_path when attempting to print debug information. Fix this by\nadding a NULL check before dereferencing wc-\u003esubvol_path in\ndo_abort_log_replay()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nbtrfs: corrige la desreferencia de puntero NULL en do_abort_log_replay()\n\nCoverity inform\u00f3 un problema de desreferencia de puntero NULL (CID 1666756) en do_abort_log_replay(). Cuando btrfs_alloc_path() falla en replay_one_buffer(), wc-\u0026gt;subvol_path es NULL, pero btrfs_abort_log_replay() llama a do_abort_log_replay() que desreferencia incondicionalmente wc-\u0026gt;subvol_path al intentar imprimir informaci\u00f3n de depuraci\u00f3n. Esto se corrige a\u00f1adiendo una comprobaci\u00f3n de NULL antes de desreferenciar wc-\u0026gt;subvol_path en do_abort_log_replay()."
    }
  ],
  "id": "CVE-2026-23043",
  "lastModified": "2026-06-17T10:20:45.820",
  "metrics": {},
  "published": "2026-02-04T16:16:19.793",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/530e3d4af566ca44807d79359b90794dea24c4f3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6d1b61b8e1e44888c643d89225ab819b10649b2e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



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