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CVE-2026-80857

fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 0c7fca880a40a209a9c92be14143996d14b93ff6
Version < a8bbb2a60513bf322170903c21462f0bf4f62be2
Status affected
Version 204aa22a686bfee48daca7db620c1e017615f2ff
Version < 715cb86e33cda43f5224cdc3fd5610c0b6a46f7a
Status affected
Version 204aa22a686bfee48daca7db620c1e017615f2ff
Version < 64b0b5cacbd2fea88001464cb712c9dfc795b26e
Status affected
Version 300e812b882a174dca675d8028684001ad5826bc
Status affected
Version 6.18.25
Version < 6.18.50
Status affected
Version 7.0.2
Version < 7.1
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 7.1
Status affected
Version 0
Version < 7.1
Status unaffected
Version <= 6.18.*
Version 6.18.50
Status unaffected
Version <= 7.2.*
Version 7.2.3
Status unaffected
Version <= *
Version 7.3-rc1
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.041
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/715cb86e33cda43f5224cdc3fd5610c0b6a46f7a
https://git.kernel.org/stable/c/64b0b5cacbd2fea88001464cb712c9dfc795b26e
https://git.kernel.org/stable/c/a8bbb2a60513bf322170903c21462f0bf4f62be2