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Message-ID: <2025120904-CVE-2023-53858-87d4@gregkh>
Date: Tue,  9 Dec 2025 10:31:42 +0900
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53858: tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() in case of error

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

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

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

tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() in case of error

If clk_get_rate() fails, the clk that has just been allocated needs to be
freed.

The Linux kernel CVE team has assigned CVE-2023-53858 to this issue.


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

	Issue introduced in 3.3 with commit 5f5a7a5578c5885201cf9c85856f023fe8b81765 and fixed in 4.14.322 with commit 755289d67eb9a74ae71bb624902e979c66859444
	Issue introduced in 3.3 with commit 5f5a7a5578c5885201cf9c85856f023fe8b81765 and fixed in 4.19.291 with commit f47e6631a8fcc6fe05b8644aa4222a60f3b0a927
	Issue introduced in 3.3 with commit 5f5a7a5578c5885201cf9c85856f023fe8b81765 and fixed in 5.4.251 with commit 30962268fa1a7466413b3d83037688129021d470
	Issue introduced in 3.3 with commit 5f5a7a5578c5885201cf9c85856f023fe8b81765 and fixed in 5.10.188 with commit a49e5a05121c8bc471a57b4916c5393749c24de5
	Issue introduced in 3.3 with commit 5f5a7a5578c5885201cf9c85856f023fe8b81765 and fixed in 5.15.121 with commit 073dbbe5743779faf24f233cc95459b47c7198dd
	Issue introduced in 3.3 with commit 5f5a7a5578c5885201cf9c85856f023fe8b81765 and fixed in 6.1.40 with commit 34f5b826dd509b76644f83094b4af7e7668a6a38
	Issue introduced in 3.3 with commit 5f5a7a5578c5885201cf9c85856f023fe8b81765 and fixed in 6.4.5 with commit 1694fc8ad734e2909a9e40d2be03cc4423e0bee6
	Issue introduced in 3.3 with commit 5f5a7a5578c5885201cf9c85856f023fe8b81765 and fixed in 6.5 with commit a9c09546e903f1068acfa38e1ee18bded7114b37

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-2023-53858
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/tty/serial/samsung_tty.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/755289d67eb9a74ae71bb624902e979c66859444
	https://git.kernel.org/stable/c/f47e6631a8fcc6fe05b8644aa4222a60f3b0a927
	https://git.kernel.org/stable/c/30962268fa1a7466413b3d83037688129021d470
	https://git.kernel.org/stable/c/a49e5a05121c8bc471a57b4916c5393749c24de5
	https://git.kernel.org/stable/c/073dbbe5743779faf24f233cc95459b47c7198dd
	https://git.kernel.org/stable/c/34f5b826dd509b76644f83094b4af7e7668a6a38
	https://git.kernel.org/stable/c/1694fc8ad734e2909a9e40d2be03cc4423e0bee6
	https://git.kernel.org/stable/c/a9c09546e903f1068acfa38e1ee18bded7114b37

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