netdev - [PATCH 5.10 0/1] 9p/net: fix possible memory leak in p9_check

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Date: Thu, 21 Dec 2023 14:01:21 +0300
From: Alexey Panov <apanov@...ralinux.ru>
To: stable@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Alexey Panov <apanov@...ralinux.ru>,
	ericvh@...nel.org,
	lucho@...kov.net,
	asmadeus@...ewreck.org,
	linux_oss@...debyte.com,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	v9fs@...ts.linux.dev,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	lvc-project@...uxtesting.org
Subject: [PATCH 5.10 0/1] 9p/net: fix possible memory leak in p9_check_errors()

Syzkaller reports "memory leak in p9pdu_readf" in 5.10 stable releases.
I've attached reproducers in Bugzilla [1].

The problem has been fixed by the following patch which can be applied
to the 5.10 branch.
The fix is already present in all stable branches starting from 5.15.

[1] https://bugzilla.kernel.org/show_bug.cgi?id=218235

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.