linux-cve-announce - CVE-2025-68805: fuse: fix io-uring list corruption for terminated non-committed requests

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Message-ID: <2026011309-CVE-2025-68805-3284@gregkh>
Date: Tue, 13 Jan 2026 16:29:31 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-68805: fuse: fix io-uring list corruption for terminated non-committed requests

From: Greg Kroah-Hartman <gregkh@...nel.org>

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

fuse: fix io-uring list corruption for terminated non-committed requests

When a request is terminated before it has been committed, the request
is not removed from the queue's list. This leaves a dangling list entry
that leads to list corruption and use-after-free issues.

Remove the request from the queue's list for terminated non-committed
requests.

The Linux kernel CVE team has assigned CVE-2025-68805 to this issue.


Affected and fixed versions
===========================

	Issue introduced in 6.14 with commit c090c8abae4b6b77a1bee116aa6c385456ebef96 and fixed in 6.18.3 with commit a6d1f1ace16d0e777a85f84267160052d3499b6e
	Issue introduced in 6.14 with commit c090c8abae4b6b77a1bee116aa6c385456ebef96 and fixed in 6.19-rc1 with commit 95c39eef7c2b666026c69ab5b30471da94ea2874

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2025-68805
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	fs/fuse/dev_uring.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/a6d1f1ace16d0e777a85f84267160052d3499b6e
	https://git.kernel.org/stable/c/95c39eef7c2b666026c69ab5b30471da94ea2874