linux-cve-announce - CVE-2025-39789: crypto: x86/aegis

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Message-ID: <2025091152-CVE-2025-39789-8cdc@gregkh>
Date: Thu, 11 Sep 2025 18:57:07 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-39789: crypto: x86/aegis - Add missing error checks

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

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

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

crypto: x86/aegis - Add missing error checks

The skcipher_walk functions can allocate memory and can fail, so
checking for errors is necessary.

The Linux kernel CVE team has assigned CVE-2025-39789 to this issue.


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

	Issue introduced in 4.18 with commit 1d373d4e8e15b358f08de52956b32e0e38a11f84 and fixed in 6.16.4 with commit 475104178f4d30e749ee4f5473c87f692b93bebb
	Issue introduced in 4.18 with commit 1d373d4e8e15b358f08de52956b32e0e38a11f84 and fixed in 6.17-rc1 with commit 3d9eb180fbe8828cce43bce4c370124685b205c3

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-2025-39789
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:
	arch/x86/crypto/aegis128-aesni-glue.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/475104178f4d30e749ee4f5473c87f692b93bebb
	https://git.kernel.org/stable/c/3d9eb180fbe8828cce43bce4c370124685b205c3