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Message-ID: <2025022656-CVE-2022-49435-78f3@gregkh>
Date: Wed, 26 Feb 2025 03:11:49 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49435: mfd: davinci_voicecodec: Fix possible null-ptr-deref davinci_vc_probe()
Description
===========
In the Linux kernel, the following vulnerability has been resolved:
mfd: davinci_voicecodec: Fix possible null-ptr-deref davinci_vc_probe()
It will cause null-ptr-deref when using 'res', if platform_get_resource()
returns NULL, so move using 'res' after devm_ioremap_resource() that
will check it to avoid null-ptr-deref.
And use devm_platform_get_and_ioremap_resource() to simplify code.
The Linux kernel CVE team has assigned CVE-2022-49435 to this issue.
Affected and fixed versions
===========================
Issue introduced in 5.4 with commit b5e29aa880be84c271be8d0726cec4018bfbfd74 and fixed in 5.4.198 with commit 49c1e32e7b3f301642a60448700ec531df981269
Issue introduced in 5.4 with commit b5e29aa880be84c271be8d0726cec4018bfbfd74 and fixed in 5.10.121 with commit a1d4941d9a24999f680799f9bbde7f57351ca637
Issue introduced in 5.4 with commit b5e29aa880be84c271be8d0726cec4018bfbfd74 and fixed in 5.15.46 with commit 5289795824b77489803b0802cd9edc13824a2d0b
Issue introduced in 5.4 with commit b5e29aa880be84c271be8d0726cec4018bfbfd74 and fixed in 5.17.14 with commit 2d00158a06efe6bbcd020108634ea0f2ed8b32f7
Issue introduced in 5.4 with commit b5e29aa880be84c271be8d0726cec4018bfbfd74 and fixed in 5.18.3 with commit 579944b9f38727d9ff570b58f83bc424e8af8398
Issue introduced in 5.4 with commit b5e29aa880be84c271be8d0726cec4018bfbfd74 and fixed in 5.19 with commit 311242c7703df0da14c206260b7e855f69cb0264
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-2022-49435
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/mfd/davinci_voicecodec.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/49c1e32e7b3f301642a60448700ec531df981269
https://git.kernel.org/stable/c/a1d4941d9a24999f680799f9bbde7f57351ca637
https://git.kernel.org/stable/c/5289795824b77489803b0802cd9edc13824a2d0b
https://git.kernel.org/stable/c/2d00158a06efe6bbcd020108634ea0f2ed8b32f7
https://git.kernel.org/stable/c/579944b9f38727d9ff570b58f83bc424e8af8398
https://git.kernel.org/stable/c/311242c7703df0da14c206260b7e855f69cb0264
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