linux-cve-announce - CVE-2022-49144: io_uring: fix memory leak of uid in files registration

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: <2025022608-CVE-2022-49144-0d56@gregkh>
Date: Wed, 26 Feb 2025 02:55:49 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49144: io_uring: fix memory leak of uid in files registration

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

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

io_uring: fix memory leak of uid in files registration

When there are no files for __io_sqe_files_scm() to process in the
range, it'll free everything and return. However, it forgets to put uid.

The Linux kernel CVE team has assigned CVE-2022-49144 to this issue.


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

	Issue introduced in 5.5 with commit 08a451739a9b5783f67de51e84cb6d9559bb9dc4 and fixed in 5.10.110 with commit b27de7011cb3ba14b047be2cee0ed8278368665b
	Issue introduced in 5.5 with commit 08a451739a9b5783f67de51e84cb6d9559bb9dc4 and fixed in 5.15.33 with commit 0853bd6885c2f293d88aaa7f7f1702c959b31680
	Issue introduced in 5.5 with commit 08a451739a9b5783f67de51e84cb6d9559bb9dc4 and fixed in 5.16.19 with commit d6d7a517e81accf6ed22d55684baea763d2dbe43
	Issue introduced in 5.5 with commit 08a451739a9b5783f67de51e84cb6d9559bb9dc4 and fixed in 5.17.2 with commit 7fa8b228c3f30060b9f4b24bb9aaaf41b0ae83fe
	Issue introduced in 5.5 with commit 08a451739a9b5783f67de51e84cb6d9559bb9dc4 and fixed in 5.18 with commit c86d18f4aa93e0e66cda0e55827cd03eea6bc5f8

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-2022-49144
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/io_uring.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/b27de7011cb3ba14b047be2cee0ed8278368665b
	https://git.kernel.org/stable/c/0853bd6885c2f293d88aaa7f7f1702c959b31680
	https://git.kernel.org/stable/c/d6d7a517e81accf6ed22d55684baea763d2dbe43
	https://git.kernel.org/stable/c/7fa8b228c3f30060b9f4b24bb9aaaf41b0ae83fe
	https://git.kernel.org/stable/c/c86d18f4aa93e0e66cda0e55827cd03eea6bc5f8