Bug 2507274 (CVE-2026-64261) - CVE-2026-64261 kernel: fuse-uring: Avoid use-after-free in fuse_uring_async_stop_queues
Summary: CVE-2026-64261 kernel: fuse-uring: Avoid use-after-free in fuse_uring_async_s...
Keywords:
Status: NEW
Alias: CVE-2026-64261
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-25 10:14 UTC by OSIDB Bzimport
Modified: 2026-07-27 06:06 UTC (History)
2 users (show)

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Description OSIDB Bzimport 2026-07-25 10:14:01 UTC 
In the Linux kernel, the following vulnerability has been resolved:

fuse-uring: Avoid use-after-free in fuse_uring_async_stop_queues

fuse_uring_async_stop_queues() might run when the last reference
on ring->queue_refs was already dropped.

In order to avoid an early destruction a reference on struct fuse_conn
is now taken before starting fuse_uring_async_stop_queues() and that
reference is only released when that delayed work queue terminates.
Comment 1 TEJ RATHI 2026-07-27 05:57:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026072557-CVE-2026-64261-71c6@gregkh/T
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