linux-cve-announce - CVE-2023-53025: NFSD: fix use-after-free in nfsd4_ssc_setup

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: <2025032719-CVE-2023-53025-5662@gregkh>
Date: Thu, 27 Mar 2025 17:44:12 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2023-53025: NFSD: fix use-after-free in nfsd4_ssc_setup_dul()

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

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

NFSD: fix use-after-free in nfsd4_ssc_setup_dul()

If signal_pending() returns true, schedule_timeout() will not be executed,
causing the waiting task to remain in the wait queue.
Fixed by adding a call to finish_wait(), which ensures that the waiting
task will always be removed from the wait queue.

The Linux kernel CVE team has assigned CVE-2023-53025 to this issue.


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

	Issue introduced in 5.14 with commit f4e44b393389c77958f7c58bf4415032b4cda15b and fixed in 5.15.91 with commit 0a27dcd5343026ac0cb168ee63304255372b7a36
	Issue introduced in 5.14 with commit f4e44b393389c77958f7c58bf4415032b4cda15b and fixed in 6.1.9 with commit 32d5eb95f8f0e362e37c393310b13b9e95404560
	Issue introduced in 5.14 with commit f4e44b393389c77958f7c58bf4415032b4cda15b and fixed in 6.2 with commit e6cf91b7b47ff82b624bdfe2fdcde32bb52e71dd

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-2023-53025
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/nfsd/nfs4proc.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/6ac4c383c39f8f2f955f868d1ad9365c2363e80b
	https://git.kernel.org/stable/c/0a27dcd5343026ac0cb168ee63304255372b7a36
	https://git.kernel.org/stable/c/32d5eb95f8f0e362e37c393310b13b9e95404560
	https://git.kernel.org/stable/c/e6cf91b7b47ff82b624bdfe2fdcde32bb52e71dd