linux-cve-announce - CVE-2022-49061: net: ethernet: stmmac: fix altr_tse

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2025022653-CVE-2022-49061-01b6@gregkh>
Date: Wed, 26 Feb 2025 02:54:26 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49061: net: ethernet: stmmac: fix altr_tse_pcs function when using a fixed-link

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

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

net: ethernet: stmmac: fix altr_tse_pcs function when using a fixed-link

When using a fixed-link, the altr_tse_pcs driver crashes
due to null-pointer dereference as no phy_device is provided to
tse_pcs_fix_mac_speed function. Fix this by adding a check for
phy_dev before calling the tse_pcs_fix_mac_speed() function.

Also clean up the tse_pcs_fix_mac_speed function a bit. There is
no need to check for splitter_base and sgmii_adapter_base
because the driver will fail if these 2 variables are not
derived from the device tree.

The Linux kernel CVE team has assigned CVE-2022-49061 to this issue.


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

	Issue introduced in 4.8 with commit fb3bbdb859891e6bc27fd1afb3a07319f82c2ee4 and fixed in 5.4.190 with commit 7e59fdf9547c4f948d1d917ec7ffa5fb5ac53bdb
	Issue introduced in 4.8 with commit fb3bbdb859891e6bc27fd1afb3a07319f82c2ee4 and fixed in 5.10.112 with commit 08d5e3e954537931c8da7428034808d202e98299
	Issue introduced in 4.8 with commit fb3bbdb859891e6bc27fd1afb3a07319f82c2ee4 and fixed in 5.15.35 with commit 62a48383ebe2e159fd68425dd3e16d4c6bd6599a
	Issue introduced in 4.8 with commit fb3bbdb859891e6bc27fd1afb3a07319f82c2ee4 and fixed in 5.17.4 with commit 6c020f05253df04c3480b586fe188a3582740049
	Issue introduced in 4.8 with commit fb3bbdb859891e6bc27fd1afb3a07319f82c2ee4 and fixed in 5.18 with commit a6aaa00324240967272b451bfa772547bd576ee6

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-2022-49061
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/stmicro/stmmac/altr_tse_pcs.c
	drivers/net/ethernet/stmicro/stmmac/altr_tse_pcs.h
	drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.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/7e59fdf9547c4f948d1d917ec7ffa5fb5ac53bdb
	https://git.kernel.org/stable/c/08d5e3e954537931c8da7428034808d202e98299
	https://git.kernel.org/stable/c/62a48383ebe2e159fd68425dd3e16d4c6bd6599a
	https://git.kernel.org/stable/c/6c020f05253df04c3480b586fe188a3582740049
	https://git.kernel.org/stable/c/a6aaa00324240967272b451bfa772547bd576ee6