linux-cve-announce - CVE-2024-50247: fs/ntfs3: Check if more than chunk-size bytes are written

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Message-ID: <2024110935-CVE-2024-50247-79d8@gregkh>
Date: Sat,  9 Nov 2024 11:15:55 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-50247: fs/ntfs3: Check if more than chunk-size bytes are written

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

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

fs/ntfs3: Check if more than chunk-size bytes are written

A incorrectly formatted chunk may decompress into
more than LZNT_CHUNK_SIZE bytes and a index out of bounds
will occur in s_max_off.

The Linux kernel CVE team has assigned CVE-2024-50247 to this issue.


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

	Fixed in 5.15.171 with commit e5ae78590086
	Fixed in 6.1.116 with commit 1b6bc5f72121
	Fixed in 6.6.60 with commit 5f21e3e60982
	Fixed in 6.11.7 with commit 4a4727bc5828
	Fixed in 6.12-rc3 with commit 9931122d04c6

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-2024-50247
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/ntfs3/lznt.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/e5ae7859008688626b4d2fa6139eeaa08e255053
	https://git.kernel.org/stable/c/1b6bc5f7212181093b6c5310eea216fc09c721a9
	https://git.kernel.org/stable/c/5f21e3e60982cd7353998b4f59f052134fd47d64
	https://git.kernel.org/stable/c/4a4727bc582832f354e0d3d49838a401a28ae25e
	https://git.kernel.org/stable/c/9931122d04c6d431b2c11b5bb7b10f28584067f0