{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-43063",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-43063"
  ],
  "published": "2026-05-05T15:23:45Z",
  "summary": "xfs: don't irele after failing to iget in xfs_attri_recover_work",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: don't irele after failing to iget in xfs_attri_recover_work\n\nxlog_recovery_iget* never set @ip to a valid pointer if they return\nan error, so this irele will walk off a dangling pointer.  Fix that.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
    }
  ],
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43063"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b5c5a50c2f513d4a13a6763564a07b470e69cc5a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a1a5df1038f0b3c560d204270373621a4e622808"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/40082d08b638485cbaa543dc8087a3d1844d6f08"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/70685c291ef82269180758130394ecdc4496b52c"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T13:16:28Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 7.8,
      "cvss_v3_severity": "High",
      "scenario": "AV:L - Vulnerable code is reached during local XFS filesystem mount/log recovery from a block device or filesystem image, not through network input. A crafted XFS image or dirty log is the plausible attack vehicle.\nAC:L - No race or hard-to-control timing is required; a crafted recoverable XFS log item that makes inode lookup fail deterministically reaches the bad `xfs_irele` path. The needed log state is attacker-controlled in the malicious filesystem image.\nPR:N - The direct mount path requires `CAP_SYS_ADMIN` because XFS is not `FS_USERNS_MOUNT`, but an attacker can supply a malicious filesystem image for a privileged user or automounter to mount. In that highest reasonable scenario, the attacker needs no privileges on the target.\nUI:R - Exploitation requires the crafted XFS filesystem to be mounted or recovered by a user, administrator, or mounting service. No further user action is needed once recovery starts.\nS:U - The vulnerability corrupts kernel state within the same operating-system security authority. It is not a VM escape or other cross-scope boundary violation.\nC:H - The bug releases an uninitialized or dangling inode pointer during recovery, which is kernel memory corruption/use-after-free class behavior. Following the higher-severity rule, this is treated as potentially enabling kernel memory disclosure.\nI:H - The invalid inode release can corrupt kernel object lifetime/refcounts and may be exploitable beyond a simple crash. Following the higher-severity rule for dangling pointer memory corruption, integrity impact is High.\nA:H - At minimum, calling `xfs_irele` on an invalid or dangling pointer can crash or BUG the kernel during mount recovery. This gives high availability impact."
    }
  }
}