linux-cve-announce - CVE-2025-40252: net: qlogic/qede: fix potential out-of-bounds read in qede_tpa_cont() and qede_tpa

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Message-ID: <2025120431-CVE-2025-40252-2d9b@gregkh>
Date: Thu,  4 Dec 2025 16:57:33 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-40252: net: qlogic/qede: fix potential out-of-bounds read in qede_tpa_cont() and qede_tpa_end()

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

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

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

net: qlogic/qede: fix potential out-of-bounds read in qede_tpa_cont() and qede_tpa_end()

The loops in 'qede_tpa_cont()' and 'qede_tpa_end()', iterate
over 'cqe->len_list[]' using only a zero-length terminator as
the stopping condition. If the terminator was missing or
malformed, the loop could run past the end of the fixed-size array.

Add an explicit bound check using ARRAY_SIZE() in both loops to prevent
a potential out-of-bounds access.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

The Linux kernel CVE team has assigned CVE-2025-40252 to this issue.


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

	Issue introduced in 4.6 with commit 55482edc25f0606851de42e73618f813f310d009 and fixed in 6.6.118 with commit f0923011c1261b33a2ac1de349256d39cb750dd0
	Issue introduced in 4.6 with commit 55482edc25f0606851de42e73618f813f310d009 and fixed in 6.12.60 with commit 917a9d02182ac8b4f25eb47dc02f3ec679608c24
	Issue introduced in 4.6 with commit 55482edc25f0606851de42e73618f813f310d009 and fixed in 6.17.10 with commit e441db07f208184e0466abf44b389a81d70c340e
	Issue introduced in 4.6 with commit 55482edc25f0606851de42e73618f813f310d009 and fixed in 6.18 with commit 896f1a2493b59beb2b5ccdf990503dbb16cb2256

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-2025-40252
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:
	drivers/net/ethernet/qlogic/qede/qede_fp.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/f0923011c1261b33a2ac1de349256d39cb750dd0
	https://git.kernel.org/stable/c/917a9d02182ac8b4f25eb47dc02f3ec679608c24
	https://git.kernel.org/stable/c/e441db07f208184e0466abf44b389a81d70c340e
	https://git.kernel.org/stable/c/896f1a2493b59beb2b5ccdf990503dbb16cb2256