Description
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.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/0e4a5a000123d81234e27a2f8187688cf608f755 Patch
- git.kernel.org/stable/c/1ca605cfa59377f0143fb35b5b01360f37d1b7c4 Patch
- git.kernel.org/stable/c/1f9156714592356b4fda57beac7eab9c2a462dd3 Patch
- git.kernel.org/stable/c/5630da218a45ba80f0aba0846cbe8aa655da122b Patch
- git.kernel.org/stable/c/65a1c2551f7e16085acbb54aedde1feaa559ba7a Patch
- git.kernel.org/stable/c/b5befa80fdbe287a98480effed9564712924add5 Patch
- git.kernel.org/stable/c/be353caffa8640f5e25fb3714ce8b0cef5e410e5 Patch
- git.kernel.org/stable/c/e6aa539720c3d8def69683ed0c07cf9faea4e8be Patch
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 14 November 2026
- CWE
- CWE-416CWE-362
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