PT-2026-85738 · Linux · Linux
CVE-2026-80860
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Published
2026-09-04
·
Updated
2026-09-04
None
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In the Linux kernel, the following vulnerability has been resolved:
fuse: fix race between interrupt and resend
After commit f8fce75fedf7 ("fuse: clear intr entry in fuse resend and
fuse remove pending req") the WARN ON(!list empty(&req->intr entry)) in
fuse request free() still triggers due to the following race:
In request wait answer()
if (test bit(FR SENT, &req->flags)) -> returns true
In fuse chan resend()
clear bit(FR SENT, &req->flags)
In request wait answer()
queue interrupt(req)
Fix by:
-
move clearing FR SENT inside fpq->lock
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move setting FR PENDING inside fiq->lock
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recheck FR SENT after acquiring fiq->lock in fuse dev queue interrupt()
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Related Identifiers
Affected Products
Linux