CVE-2026-80857fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 0c7fca880a40a209a9c92be14143996d14b93ff6 before a8bbb2a60513bf322170903c21462f0bf4f62be2; from 204aa22a686bfee48daca7db620c1e017615f2ff before 715cb86e33cda43f5224cdc3fd5610c0b6a46f7a; 204aa22a686bfee48daca7db620c1e017615f2ff builds before 64b0b5cacbd2fea88001464cb712c9dfc795b26e; 300e812b882a174dca675d8028684001ad5826bc; from 6.18.25 before 6.18.50; from 7.0.2 before 7.1 | CNA record |
References
- https://git.kernel.org/stable/c/a8bbb2a60513bf322170903c21462f0bf4f62be2
- https://git.kernel.org/stable/c/715cb86e33cda43f5224cdc3fd5610c0b6a46f7a
- https://git.kernel.org/stable/c/64b0b5cacbd2fea88001464cb712c9dfc795b26e
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.