linux-cve-announce - CVE-2023-54325: crypto: qat

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Message-ID: <2025123016-CVE-2023-54325-3e5c@gregkh>
Date: Tue, 30 Dec 2025 13:37:20 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-54325: crypto: qat - fix out-of-bounds read

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

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

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

crypto: qat - fix out-of-bounds read

When preparing an AER-CTR request, the driver copies the key provided by
the user into a data structure that is accessible by the firmware.
If the target device is QAT GEN4, the key size is rounded up by 16 since
a rounded up size is expected by the device.
If the key size is rounded up before the copy, the size used for copying
the key might be bigger than the size of the region containing the key,
causing an out-of-bounds read.

Fix by doing the copy first and then update the keylen.

This is to fix the following warning reported by KASAN:

	[  138.150574] BUG: KASAN: global-out-of-bounds in qat_alg_skcipher_init_com.isra.0+0x197/0x250 [intel_qat]
	[  138.150641] Read of size 32 at addr ffffffff88c402c0 by task cryptomgr_test/2340

	[  138.150651] CPU: 15 PID: 2340 Comm: cryptomgr_test Not tainted 6.2.0-rc1+ #45
	[  138.150659] Hardware name: Intel Corporation ArcherCity/ArcherCity, BIOS EGSDCRB1.86B.0087.D13.2208261706 08/26/2022
	[  138.150663] Call Trace:
	[  138.150668]  <TASK>
	[  138.150922]  kasan_check_range+0x13a/0x1c0
	[  138.150931]  memcpy+0x1f/0x60
	[  138.150940]  qat_alg_skcipher_init_com.isra.0+0x197/0x250 [intel_qat]
	[  138.151006]  qat_alg_skcipher_init_sessions+0xc1/0x240 [intel_qat]
	[  138.151073]  crypto_skcipher_setkey+0x82/0x160
	[  138.151085]  ? prepare_keybuf+0xa2/0xd0
	[  138.151095]  test_skcipher_vec_cfg+0x2b8/0x800

The Linux kernel CVE team has assigned CVE-2023-54325 to this issue.


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

	Issue introduced in 5.11 with commit 67916c9516893528ecce060ada1f58af0ce33d93 and fixed in 5.15.99 with commit 7697139d5dfd491f4c495a914a1dd68f6e827a0f
	Issue introduced in 5.11 with commit 67916c9516893528ecce060ada1f58af0ce33d93 and fixed in 6.1.16 with commit dc3809f390357c8992f0a23083da934a20fef9af
	Issue introduced in 5.11 with commit 67916c9516893528ecce060ada1f58af0ce33d93 and fixed in 6.2.3 with commit 2b1501f058245573a3aa6bf234d205dde1196184
	Issue introduced in 5.11 with commit 67916c9516893528ecce060ada1f58af0ce33d93 and fixed in 6.3 with commit f6044cc3030e139f60c281386f28bda6e3049d66

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-2023-54325
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/crypto/qat/qat_common/qat_algs.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/7697139d5dfd491f4c495a914a1dd68f6e827a0f
	https://git.kernel.org/stable/c/dc3809f390357c8992f0a23083da934a20fef9af
	https://git.kernel.org/stable/c/2b1501f058245573a3aa6bf234d205dde1196184
	https://git.kernel.org/stable/c/f6044cc3030e139f60c281386f28bda6e3049d66