Vulnerability-Lookup

GHSA-VQP8-9648-3QFH

Vulnerability from github – Published: 2026-05-05 18:33 – Updated: 2026-05-05 18:33

Details

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

ext4: fix iloc.bh leak in ext4_fc_replay_inode() error paths

During code review, Joseph found that ext4_fc_replay_inode() calls ext4_get_fc_inode_loc() to get the inode location, which holds a reference to iloc.bh that must be released via brelse().

However, several error paths jump to the 'out' label without releasing iloc.bh:

ext4_handle_dirty_metadata() failure
sync_dirty_buffer() failure
ext4_mark_inode_used() failure
ext4_iget() failure

Fix this by introducing an 'out_brelse' label placed just before the existing 'out' label to ensure iloc.bh is always released.

Additionally, make ext4_fc_replay_inode() propagate errors properly instead of always returning 0.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43066"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-05T16:16:15Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix iloc.bh leak in ext4_fc_replay_inode() error paths\n\nDuring code review, Joseph found that ext4_fc_replay_inode() calls\next4_get_fc_inode_loc() to get the inode location, which holds a\nreference to iloc.bh that must be released via brelse().\n\nHowever, several error paths jump to the \u0027out\u0027 label without\nreleasing iloc.bh:\n\n - ext4_handle_dirty_metadata() failure\n - sync_dirty_buffer() failure\n - ext4_mark_inode_used() failure\n - ext4_iget() failure\n\nFix this by introducing an \u0027out_brelse\u0027 label placed just before\nthe existing \u0027out\u0027 label to ensure iloc.bh is always released.\n\nAdditionally, make ext4_fc_replay_inode() propagate errors\nproperly instead of always returning 0.",
  "id": "GHSA-vqp8-9648-3qfh",
  "modified": "2026-05-05T18:33:25Z",
  "published": "2026-05-05T18:33:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43066"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0892f12cd49fde5d5db68137923db107f894f3a3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19782b4c793b49a6aa4abbb307ddff3610009d21"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5a63033696e60b5d70816f1d119645ac5b0b0a03"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9c90449a9ac2cd1ba540ad2561b8b70c1bfb0a25"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c426231e3d51916e83b6d1ab7ed8a65e83bca5b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ca99cbcc316cdfd2040cc2b13d1426ccb3b3b50b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec0a7500d8eace5b4f305fa0c594dd148f0e8d29"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7817ad399d604e8639005d87d148b5ec626ad26"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-43066 (GCVE-0-2026-43066)

Vulnerability from cvelistv5 – Published: 2026-05-05 15:23 – Updated: 2026-05-11 22:17

Title

ext4: fix iloc.bh leak in ext4_fc_replay_inode() error paths

Summary

In the Linux kernel, the following vulnerability has been resolved: ext4: fix iloc.bh leak in ext4_fc_replay_inode() error paths During code review, Joseph found that ext4_fc_replay_inode() calls ext4_get_fc_inode_loc() to get the inode location, which holds a reference to iloc.bh that must be released via brelse(). However, several error paths jump to the 'out' label without releasing iloc.bh: - ext4_handle_dirty_metadata() failure - sync_dirty_buffer() failure - ext4_mark_inode_used() failure - ext4_iget() failure Fix this by introducing an 'out_brelse' label placed just before the existing 'out' label to ensure iloc.bh is always released. Additionally, make ext4_fc_replay_inode() propagate errors properly instead of always returning 0.

Severity ?

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/0892f12cd49fde5d5…
https://git.kernel.org/stable/c/5a63033696e60b5d7…
https://git.kernel.org/stable/c/9c90449a9ac2cd1ba…
https://git.kernel.org/stable/c/ca99cbcc316cdfd20…
https://git.kernel.org/stable/c/19782b4c793b49a6a…
https://git.kernel.org/stable/c/f7817ad399d604e86…
https://git.kernel.org/stable/c/c426231e3d51916e8…
https://git.kernel.org/stable/c/ec0a7500d8eace5b4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 , < 0892f12cd49fde5d5db68137923db107f894f3a3 (git) Affected: 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 , < 5a63033696e60b5d70816f1d119645ac5b0b0a03 (git) Affected: 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 , < 9c90449a9ac2cd1ba540ad2561b8b70c1bfb0a25 (git) Affected: 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 , < ca99cbcc316cdfd2040cc2b13d1426ccb3b3b50b (git) Affected: 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 , < 19782b4c793b49a6aa4abbb307ddff3610009d21 (git) Affected: 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 , < f7817ad399d604e8639005d87d148b5ec626ad26 (git) Affected: 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 , < c426231e3d51916e83b6d1ab7ed8a65e83bca5b4 (git) Affected: 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 , < ec0a7500d8eace5b4f305fa0c594dd148f0e8d29 (git)
Linux	Linux	Affected: 5.10 Unaffected: 0 , < 5.10 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.168 , ≤ 6.1.* (semver) Unaffected: 6.6.131 , ≤ 6.6.* (semver) Unaffected: 6.12.80 , ≤ 6.12.* (semver) Unaffected: 6.18.21 , ≤ 6.18.* (semver) Unaffected: 6.19.11 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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JSON

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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-VQP8-9648-3QFH

CVE-2026-43066 (GCVE-0-2026-43066)

Tags

Sightings

Nomenclature