CVE-2026-64266 (GCVE-0-2026-64266)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:49 – Updated: 2026-10-19 20:28
VLAI
Title
fuse: re-lock request before returning from fuse_ref_folio()
Summary
In the Linux kernel, the following vulnerability has been resolved: fuse: re-lock request before returning from fuse_ref_folio() fuse_ref_folio() unlocks the request but does not re-lock it before returning. fuse_chan_abort() can end the request and the async end callback (eg fuse_writepage_free()) can free the args while the subsequent copy chain logic after fuse_ref_folio() accesses them, leading to use-after-free issues. Fix this by locking the request in fuse_ref_folio() before returning.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:38 UTC
CWE
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c3021629a0d820247ee12b6c5192a1d5380e21c6 , < 1f9156714592356b4fda57beac7eab9c2a462dd3 (git)
Affected: c3021629a0d820247ee12b6c5192a1d5380e21c6 , < 5630da218a45ba80f0aba0846cbe8aa655da122b (git)
Affected: c3021629a0d820247ee12b6c5192a1d5380e21c6 , < 1ca605cfa59377f0143fb35b5b01360f37d1b7c4 (git)
Affected: c3021629a0d820247ee12b6c5192a1d5380e21c6 , < 0e4a5a000123d81234e27a2f8187688cf608f755 (git)
Affected: c3021629a0d820247ee12b6c5192a1d5380e21c6 , < e6aa539720c3d8def69683ed0c07cf9faea4e8be (git)
Affected: c3021629a0d820247ee12b6c5192a1d5380e21c6 , < be353caffa8640f5e25fb3714ce8b0cef5e410e5 (git)
Affected: c3021629a0d820247ee12b6c5192a1d5380e21c6 , < 65a1c2551f7e16085acbb54aedde1feaa559ba7a (git)
Affected: c3021629a0d820247ee12b6c5192a1d5380e21c6 , < b5befa80fdbe287a98480effed9564712924add5 (git)
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Linux Linux Affected: 2.6.35
Unaffected: 0 , < 2.6.35 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.96 , ≤ 6.12.* (semver)
Unaffected: 6.18.39 , ≤ 6.18.* (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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}



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