CVE-2026-46291: crypto: caam - guard HMAC key hex dumps in hash_digest_key

CVE-2026-46291: crypto: caam - guard HMAC key hex dumps in hash_digest_key

[Greg Kroah-Hartman]

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

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

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

crypto: caam - guard HMAC key hex dumps in hash_digest_key

Use print_hex_dump_devel() for dumping sensitive HMAC key bytes in
hash_digest_key() to avoid leaking secrets at runtime when
CONFIG_DYNAMIC_DEBUG is enabled.

The Linux kernel CVE team has assigned CVE-2026-46291 to this issue.


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

	Issue introduced in 3.6 with commit 045e36780f11523e26d1e4a8c78bdc57f4003bd0 and fixed in 6.6.140 with commit 2adbfca7452eeac45117b8e803288a2767f7075f
	Issue introduced in 3.6 with commit 045e36780f11523e26d1e4a8c78bdc57f4003bd0 and fixed in 6.12.88 with commit c7e52fe3f7901ccb9cd29b3f7c683d809ba87e48
	Issue introduced in 3.6 with commit 045e36780f11523e26d1e4a8c78bdc57f4003bd0 and fixed in 6.18.30 with commit 5cffe3c136891aa4d579bf5c079a68f7cb371b0c
	Issue introduced in 3.6 with commit 045e36780f11523e26d1e4a8c78bdc57f4003bd0 and fixed in 7.0.7 with commit b8f12d9b00c1950779e5679b9c13908584682bb6
	Issue introduced in 3.6 with commit 045e36780f11523e26d1e4a8c78bdc57f4003bd0 and fixed in 7.1-rc1 with commit 177730a273b18e195263ed953853273e901b5064

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-2026-46291
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/caam/caamalg_qi2.c
	drivers/crypto/caam/caamhash.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/2adbfca7452eeac45117b8e803288a2767f7075f
	https://git.kernel.org/stable/c/c7e52fe3f7901ccb9cd29b3f7c683d809ba87e48
	https://git.kernel.org/stable/c/5cffe3c136891aa4d579bf5c079a68f7cb371b0c
	https://git.kernel.org/stable/c/b8f12d9b00c1950779e5679b9c13908584682bb6
	https://git.kernel.org/stable/c/177730a273b18e195263ed953853273e901b5064