Vulnerability-Lookup

GHSA-HGFH-GXXH-HW2V

Vulnerability from github – Published: 2026-05-08 15:31 – Updated: 2026-05-15 18:30

Details

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

btrfs: add missing RCU unlock in error path in try_release_subpage_extent_buffer()

Call rcu_read_lock() before exiting the loop in try_release_subpage_extent_buffer() because there is a rcu_read_unlock() call past the loop.

This has been detected by the Clang thread-safety analyzer.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43358"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-08T15:16:46Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: add missing RCU unlock in error path in try_release_subpage_extent_buffer()\n\nCall rcu_read_lock() before exiting the loop in\ntry_release_subpage_extent_buffer() because there is a rcu_read_unlock()\ncall past the loop.\n\nThis has been detected by the Clang thread-safety analyzer.",
  "id": "GHSA-hgfh-gxxh-hw2v",
  "modified": "2026-05-15T18:30:30Z",
  "published": "2026-05-08T15:31:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43358"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/35b0c8768e848e1b7e32052db36b5fa59b6a33a1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5e1ab71f74a1e61f1254dff128a764fdebaec0b8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b2840e33127ce0eea880504b7f133e780f567a9b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-43358 (GCVE-0-2026-43358)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:21 – Updated: 2026-05-23 16:06

Title

btrfs: add missing RCU unlock in error path in try_release_subpage_extent_buffer()

Summary

In the Linux kernel, the following vulnerability has been resolved: btrfs: add missing RCU unlock in error path in try_release_subpage_extent_buffer() Call rcu_read_lock() before exiting the loop in try_release_subpage_extent_buffer() because there is a rcu_read_unlock() call past the loop. This has been detected by the Clang thread-safety analyzer.

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/5e1ab71f74a1e61f1…
https://git.kernel.org/stable/c/35b0c8768e848e1b7…
https://git.kernel.org/stable/c/b2840e33127ce0eea…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ad580dfa388fabb52af033e3f8cc5d04be985e54 , < 5e1ab71f74a1e61f1254dff128a764fdebaec0b8 (git) Affected: ad580dfa388fabb52af033e3f8cc5d04be985e54 , < 35b0c8768e848e1b7e32052db36b5fa59b6a33a1 (git) Affected: ad580dfa388fabb52af033e3f8cc5d04be985e54 , < b2840e33127ce0eea880504b7f133e780f567a9b (git) Affected: 10ec363cfefeeb77fda4c1ac20a531f21de45264 (git) Affected: 6.16.4 , < 6.17 (semver)
Linux	Linux	Affected: 6.17 Unaffected: 0 , < 6.17 (semver) Unaffected: 6.18.19 , ≤ 6.18.* (semver) Unaffected: 6.19.9 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/extent_io.c"
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          "vendor": "Linux",
          "versions": [
            {
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              "version": "6.17"
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Sightings

Author	Source	Type	Date	Other

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.

Action not permitted

GHSA-HGFH-GXXH-HW2V

CVE-2026-43358 (GCVE-0-2026-43358)

Tags

Sightings

Nomenclature