linux-cve-announce - CVE-2024-56595: jfs: add a check to prevent array-index-out-of-bounds in dbAdjTree

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Message-ID: <2024122701-CVE-2024-56595-0584@gregkh>
Date: Fri, 27 Dec 2024 15:51:02 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-56595: jfs: add a check to prevent array-index-out-of-bounds in dbAdjTree

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

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

jfs: add a check to prevent array-index-out-of-bounds in dbAdjTree

When the value of lp is 0 at the beginning of the for loop, it will
become negative in the next assignment and we should bail out.

The Linux kernel CVE team has assigned CVE-2024-56595 to this issue.


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

	Fixed in 5.4.287 with commit b15000bcbecf27e0f7c0f149a409e5b865e28ca2
	Fixed in 5.10.231 with commit 368a533152220b0a6f1142327d96c6b6361f3002
	Fixed in 5.15.174 with commit a3d408870bc19b794646871bc4c3a5daa66f91c5
	Fixed in 6.1.120 with commit 491487eeddccc4bb49f2e59d8c8f35bec89c15ca
	Fixed in 6.6.66 with commit 3b5d21b56c3774bc84eab0a93aaac22a4475e2c4
	Fixed in 6.12.5 with commit 8a4311bbde702362fe7412045d06ab6767235dac
	Fixed in 6.13-rc1 with commit a174706ba4dad895c40b1d2277bade16dfacdcd9

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-2024-56595
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/jfs/jfs_dmap.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/b15000bcbecf27e0f7c0f149a409e5b865e28ca2
	https://git.kernel.org/stable/c/368a533152220b0a6f1142327d96c6b6361f3002
	https://git.kernel.org/stable/c/a3d408870bc19b794646871bc4c3a5daa66f91c5
	https://git.kernel.org/stable/c/491487eeddccc4bb49f2e59d8c8f35bec89c15ca
	https://git.kernel.org/stable/c/3b5d21b56c3774bc84eab0a93aaac22a4475e2c4
	https://git.kernel.org/stable/c/8a4311bbde702362fe7412045d06ab6767235dac
	https://git.kernel.org/stable/c/a174706ba4dad895c40b1d2277bade16dfacdcd9