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

Vulnerability from cvelistv5 – Published: 2026-04-03 13:24 – Updated: 2026-05-11 22:06
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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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 , ≤ * (original_commit_for_fix)
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{
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    "redhat_vex": {
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      "current_release_date": "2026-06-28T07:20:54+00:00",
      "cve": "CVE-2026-23423",
      "id": "CVE-2026-23423",
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      "product_status:known_affected": "14",
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      "title": "kernel: btrfs: free pages on error in btrfs_uring_read_extent()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23423.json",
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      "cve": "CVE-2026-23423",
      "id": "CVE-2026-23423",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-23423",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.