CVE-2026-23423 (GCVE-0-2026-23423)

Vulnerability from cvelistv5 – Published: 2026-04-03 13:24 – Updated: 2026-04-03 13:24
VLAI?
Title
btrfs: free pages on error in btrfs_uring_read_extent()
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: free pages on error in btrfs_uring_read_extent() In this function the 'pages' object is never freed in the hopes that it is picked up by btrfs_uring_read_finished() whenever that executes in the future. But that's just the happy path. Along the way previous allocations might have gone wrong, or we might not get -EIOCBQUEUED from btrfs_encoded_read_regular_fill_pages(). In all these cases, we go to a cleanup section that frees all memory allocated by this function without assuming any deferred execution, and this also needs to happen for the 'pages' allocation.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 34310c442e175f286b4c06ab5caa4e0b267ea31c , < d4f210de01eaccac61eee657f676045ef9771d07 (git)
Affected: 34310c442e175f286b4c06ab5caa4e0b267ea31c , < 628895890b0c9ac9129129e89455da7db95ba343 (git)
Affected: 34310c442e175f286b4c06ab5caa4e0b267ea31c , < 3f501412f2079ca14bf68a18d80a2b7a823f1f64 (git)
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    Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.18.17 , ≤ 6.18.* (semver)
Unaffected: 6.19.7 , ≤ 6.19.* (semver)
Unaffected: 7.0-rc3 , ≤ * (original_commit_for_fix)
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          "programFiles": [
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: free pages on error in btrfs_uring_read_extent()\n\nIn this function the \u0027pages\u0027 object is never freed in the hopes that it is\npicked up by btrfs_uring_read_finished() whenever that executes in the\nfuture. But that\u0027s just the happy path. Along the way previous\nallocations might have gone wrong, or we might not get -EIOCBQUEUED from\nbtrfs_encoded_read_regular_fill_pages(). In all these cases, we go to a\ncleanup section that frees all memory allocated by this function without\nassuming any deferred execution, and this also needs to happen for the\n\u0027pages\u0027 allocation."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-03T13:24:31.966Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "datePublished": "2026-04-03T13:24:31.966Z",
    "dateReserved": "2026-01-13T15:37:46.015Z",
    "dateUpdated": "2026-04-03T13:24:31.966Z",
    "state": "PUBLISHED"
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  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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