linux-cve-announce - CVE-2025-21924: net: hns3: make sure ptp clock is unregister and freed if hclge_ptp_get

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Message-ID: <2025040132-CVE-2025-21924-3a08@gregkh>
Date: Tue,  1 Apr 2025 16:39:48 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2025-21924: net: hns3: make sure ptp clock is unregister and freed if hclge_ptp_get_cycle returns an error

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

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

net: hns3: make sure ptp clock is unregister and freed if hclge_ptp_get_cycle returns an error

During the initialization of ptp, hclge_ptp_get_cycle might return an error
and returned directly without unregister clock and free it. To avoid that,
call hclge_ptp_destroy_clock to unregist and free clock if
hclge_ptp_get_cycle failed.

The Linux kernel CVE team has assigned CVE-2025-21924 to this issue.


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

	Issue introduced in 5.14 with commit 8373cd38a8888549ace7c7617163a2e826970a92 and fixed in 5.15.179 with commit b7d8d4529984e2d4a72a6d552fb886233e8e83cb
	Issue introduced in 5.14 with commit 8373cd38a8888549ace7c7617163a2e826970a92 and fixed in 6.1.131 with commit 33244e98aa9503585e585335fe2ceb4492630949
	Issue introduced in 5.14 with commit 8373cd38a8888549ace7c7617163a2e826970a92 and fixed in 6.6.83 with commit 2c04e507f3a5c5dc6e2b9ab37d8cdedee1ef1a37
	Issue introduced in 5.14 with commit 8373cd38a8888549ace7c7617163a2e826970a92 and fixed in 6.12.19 with commit 9cfc43c0e6e6a31122b4008d763a2960c206aa2d
	Issue introduced in 5.14 with commit 8373cd38a8888549ace7c7617163a2e826970a92 and fixed in 6.13.7 with commit 21dba813d9821687a7f9aff576798ba21a859a32
	Issue introduced in 5.14 with commit 8373cd38a8888549ace7c7617163a2e826970a92 and fixed in 6.14 with commit b7365eab39831487a84e63a9638209b68dc54008

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-2025-21924
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:
	drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_ptp.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/b7d8d4529984e2d4a72a6d552fb886233e8e83cb
	https://git.kernel.org/stable/c/33244e98aa9503585e585335fe2ceb4492630949
	https://git.kernel.org/stable/c/2c04e507f3a5c5dc6e2b9ab37d8cdedee1ef1a37
	https://git.kernel.org/stable/c/9cfc43c0e6e6a31122b4008d763a2960c206aa2d
	https://git.kernel.org/stable/c/21dba813d9821687a7f9aff576798ba21a859a32
	https://git.kernel.org/stable/c/b7365eab39831487a84e63a9638209b68dc54008