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From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: <linux-cve-announce@vger.kernel.org>
Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org>
Subject: CVE-2020-36786: media: [next] staging: media: atomisp: fix memory leak of object flash
Description
===========
In the Linux kernel, the following vulnerability has been resolved:
media: [next] staging: media: atomisp: fix memory leak of object flash
In the case where the call to lm3554_platform_data_func returns an
error there is a memory leak on the error return path of object
flash. Fix this by adding an error return path that will free
flash and rename labels fail2 to fail3 and fail1 to fail2.
The Linux kernel CVE team has assigned CVE-2020-36786 to this issue.
Affected and fixed versions
===========================
Issue introduced in 5.10 with commit 9289cdf399922a1bd801a8cd946a79581c00a380 and fixed in 5.10.37 with commit cc4cc2fb5aaf9adb83c02211eb13b16cfcb7ba64
Issue introduced in 5.10 with commit 9289cdf399922a1bd801a8cd946a79581c00a380 and fixed in 5.11.21 with commit 4f0f37d03cde8f4341df8454f9b40a67fda94a33
Issue introduced in 5.10 with commit 9289cdf399922a1bd801a8cd946a79581c00a380 and fixed in 5.12.4 with commit 27d2eab69f7da8e94e4751ac5c6d22d809275484
Issue introduced in 5.10 with commit 9289cdf399922a1bd801a8cd946a79581c00a380 and fixed in 5.13 with commit 6045b01dd0e3cd3759eafe7f290ed04c957500b1
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-2020-36786
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/staging/media/atomisp/i2c/atomisp-lm3554.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/cc4cc2fb5aaf9adb83c02211eb13b16cfcb7ba64
https://git.kernel.org/stable/c/4f0f37d03cde8f4341df8454f9b40a67fda94a33
https://git.kernel.org/stable/c/27d2eab69f7da8e94e4751ac5c6d22d809275484
https://git.kernel.org/stable/c/6045b01dd0e3cd3759eafe7f290ed04c957500b1