linux-cve-announce - CVE-2024-50089: unicode: Don't special case ignorable code points

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Message-ID: <2024110548-CVE-2024-50089-d96d@gregkh>
Date: Tue,  5 Nov 2024 18:04:49 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-50089: unicode: Don't special case ignorable code points

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

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

unicode: Don't special case ignorable code points

We don't need to handle them separately. Instead, just let them
decompose/casefold to themselves.

The Linux kernel CVE team has assigned CVE-2024-50089 to this issue.


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

	Fixed in 5.10.227 with commit 39fffca57284
	Fixed in 5.15.168 with commit 651b954cd8d5
	Fixed in 6.1.113 with commit 21526498d25e
	Fixed in 6.6.57 with commit ac20736861f3
	Fixed in 6.11.4 with commit 876d3577a5b3
	Fixed in 6.12-rc3 with commit 5c26d2f1d3f5

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-2024-50089
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:
	fs/unicode/mkutf8data.c
	fs/unicode/utf8data.c_shipped


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/39fffca572844d733b137a0ff9eacd67b9b0c8e3
	https://git.kernel.org/stable/c/651b954cd8d5b0a358ceb47c93876bb6201224e4
	https://git.kernel.org/stable/c/21526498d25e54bda3c650f756493d63fd9131b7
	https://git.kernel.org/stable/c/ac20736861f3c9c8e0a78273a4c57e9bcb0d8cc6
	https://git.kernel.org/stable/c/876d3577a5b353e482d9228d45fa0d82bf1af53a
	https://git.kernel.org/stable/c/5c26d2f1d3f5e4be3e196526bead29ecb139cf91