Bug 2507039 (CVE-2026-64260) - CVE-2026-64260 kernel: fuse-uring: Avoid queue->stopped races and set/read that value under lock
Summary: CVE-2026-64260 kernel: fuse-uring: Avoid queue->stopped races and set/read th...
Keywords:
Status: NEW
Alias: CVE-2026-64260
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-25 10:01 UTC by OSIDB Bzimport
Modified: 2026-07-28 17:38 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-07-25 10:01:49 UTC
In the Linux kernel, the following vulnerability has been resolved:

fuse-uring: Avoid queue->stopped races and set/read that value under lock

There are several readers of queue->stopped that check the value
under lock, but fuse_uring_commit_fetch() did not and actually
the value was not set under the lock in fuse_uring_abort_end_requests()
either. Especially in fuse_uring_commit_fetch it is important
to check under a lock, because due to races 'struct fuse_req'
might be freed with fuse_request_end, but another thread/cpu
might already do teardown work.

Comment 1 Mauro Matteo Cascella 2026-07-28 16:20:58 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026072557-CVE-2026-64260-f7d4@gregkh/T


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