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CVE-2026-80857 (GCVE-0-2026-80857)

Vulnerability from cvelistv5 – Published: 2026-09-04 15:55 – Updated: 2026-09-07 15:45
VLAI
Title
fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free
Summary
In the Linux kernel, the following vulnerability has been resolved: fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free The abort_on_kill path in request_wait_answer() calls fuse_abort_conn() and returns without waiting for FR_FINISHED. If fuse_dev_do_write() is concurrently processing the same request (FR_LOCKED set), the caller frees req->args while it is still being accessed, causing a use-after-free. Fix this by jumping to the existing wait_event(FR_FINISHED) instead of returning early. The wait will not hang because fuse_abort_conn() ensures all requests are ended.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0c7fca880a40a209a9c92be14143996d14b93ff6 , < a8bbb2a60513bf322170903c21462f0bf4f62be2 (git)
Affected: 204aa22a686bfee48daca7db620c1e017615f2ff , < 715cb86e33cda43f5224cdc3fd5610c0b6a46f7a (git)
Affected: 204aa22a686bfee48daca7db620c1e017615f2ff , < 64b0b5cacbd2fea88001464cb712c9dfc795b26e (git)
Affected: 300e812b882a174dca675d8028684001ad5826bc (git)
Affected: 6.18.25 , < 6.18.50 (semver)
Affected: 7.0.2 , < 7.1 (semver)
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Linux Linux Affected: 7.1
Unaffected: 0 , < 7.1 (semver)
Unaffected: 6.18.50 , ≤ 6.18.* (semver)
Unaffected: 7.2.3 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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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.
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  • 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.


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