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CVE-2026-64266

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f958da5ae69f5828d706698d981a93e55be6c88e23c5e10f856eb1eb779fadc3
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/fuse/dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.35"},{"lessThan":"2.6.35","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrE…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:521866211636e99aa1b9b34c7497c14af4dd7fae2fecaf45fd2327dc1c41975d · sha256:125e68178f0bfef7… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/fuse/dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1f9156714592356b4fda57beac7eab9c2a462dd3","status":"affected","version":"c3021629a0d820247ee12b6c5192a1d5380e21c6","versionType":"git"},{"lessThan":"5630da218a45ba80f0aba0846cbe8aa655da122b","status":"affected","version":"c3021629a0d820247ee12b6c5192a1d5380e21c6","versionType":"git"},{"lessThan":"1ca605cfa59377f0143fb35b5b01360f37d1b7c4","status":"affected","version":"c3021629a0d820247ee12b6c5192a1d5…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:521866211636e99aa1b9b34c7497c14af4dd7fae2fecaf45fd2327dc1c41975d · sha256:125e68178f0bfef7… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["fs/fuse/dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.35"},{"lessThan":"2.6.35","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrE…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:521866211636e99aa1b9b34c7497c14af4dd7fae2fecaf45fd2327dc1c41975d · sha256:125e68178f0bfef7… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/fuse/dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1f9156714592356b4fda57beac7eab9c2a462dd3","status":"affected","version":"c3021629a0d820247ee12b6c5192a1d5380e21c6","versionType":"git"},{"lessThan":"5630da218a45ba80f0aba0846cbe8aa655da122b","status":"affected","version":"c3021629a0d820247ee12b6c5192a1d5380e21c6","versionType":"git"},{"lessThan":"1ca605cfa59377f0143fb35b5b01360f37d1b7c4","status":"affected","version":"c3021629a0d820247ee12b6c5192a1d5…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:521866211636e99aa1b9b34c7497c14af4dd7fae2fecaf45fd2327dc1c41975d · sha256:125e68178f0bfef7… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:521866211636e99aa1b9b34c7497c14af4dd7fae2fecaf45fd2327dc1c41975d · sha256:125e68178f0bfef7… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/0e4a5a000123d81234e27a2f8187688cf608f755"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:521866211636e99aa1b9b34c7497c14af4dd7fae2fecaf45fd2327dc1c41975d · sha256:125e68178f0bfef7… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/1ca605cfa59377f0143fb35b5b01360f37d1b7c4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:521866211636e99aa1b9b34c7497c14af4dd7fae2fecaf45fd2327dc1c41975d · sha256:125e68178f0bfef7… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/1f9156714592356b4fda57beac7eab9c2a462dd3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:521866211636e99aa1b9b34c7497c14af4dd7fae2fecaf45fd2327dc1c41975d · sha256:125e68178f0bfef7… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/5630da218a45ba80f0aba0846cbe8aa655da122b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:521866211636e99aa1b9b34c7497c14af4dd7fae2fecaf45fd2327dc1c41975d · sha256:125e68178f0bfef7… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/65a1c2551f7e16085acbb54aedde1feaa559ba7a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:521866211636e99aa1b9b34c7497c14af4dd7fae2fecaf45fd2327dc1c41975d · sha256:125e68178f0bfef7… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/b5befa80fdbe287a98480effed9564712924add5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:521866211636e99aa1b9b34c7497c14af4dd7fae2fecaf45fd2327dc1c41975d · sha256:125e68178f0bfef7… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/be353caffa8640f5e25fb3714ce8b0cef5e410e5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:521866211636e99aa1b9b34c7497c14af4dd7fae2fecaf45fd2327dc1c41975d · sha256:125e68178f0bfef7… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/e6aa539720c3d8def69683ed0c07cf9faea4e8be"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:521866211636e99aa1b9b34c7497c14af4dd7fae2fecaf45fd2327dc1c41975d · sha256:125e68178f0bfef7… · /containers/cna/references/4

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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