linux-cve-announce - CVE-2023-53766: FS: JFS: Check for read-only mounted filesystem in txBegin

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2025120845-CVE-2023-53766-9bc9@gregkh>
Date: Mon,  8 Dec 2025 10:20:05 +0900
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53766: FS: JFS: Check for read-only mounted filesystem in txBegin

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

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

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

FS: JFS: Check for read-only mounted filesystem in txBegin

 This patch adds a check for read-only mounted filesystem
 in txBegin before starting a transaction potentially saving
 from NULL pointer deref.

The Linux kernel CVE team has assigned CVE-2023-53766 to this issue.


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

	Fixed in 4.14.324 with commit a88efca805bea93cea9187dfd00835aa7093bf1b
	Fixed in 4.19.293 with commit 97c1f26e4d4af55e8584e4646dd5c5fa7baf62c7
	Fixed in 5.4.255 with commit 2a8807f9f511c64de0c7cc9900a1683e3d72a3e5
	Fixed in 5.10.192 with commit 5c094ca994824e038b6a97835ded4e5d1d808504
	Fixed in 5.15.123 with commit 2febd5f81e4bfba61d9f374dcca628aff374cc56
	Fixed in 6.1.42 with commit aa7cdf487ab3fa47284daaccc3d7d5de01c6a84c
	Fixed in 6.4.7 with commit b0ed8ed0428ee96092da6fefa5cfacbe4abed701
	Fixed in 6.5 with commit 95e2b352c03b0a86c5717ba1d24ea20969abcacc

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-2023-53766
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_txnmgr.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/a88efca805bea93cea9187dfd00835aa7093bf1b
	https://git.kernel.org/stable/c/97c1f26e4d4af55e8584e4646dd5c5fa7baf62c7
	https://git.kernel.org/stable/c/2a8807f9f511c64de0c7cc9900a1683e3d72a3e5
	https://git.kernel.org/stable/c/5c094ca994824e038b6a97835ded4e5d1d808504
	https://git.kernel.org/stable/c/2febd5f81e4bfba61d9f374dcca628aff374cc56
	https://git.kernel.org/stable/c/aa7cdf487ab3fa47284daaccc3d7d5de01c6a84c
	https://git.kernel.org/stable/c/b0ed8ed0428ee96092da6fefa5cfacbe4abed701
	https://git.kernel.org/stable/c/95e2b352c03b0a86c5717ba1d24ea20969abcacc