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NFSD: Prevent NULL dereference in nfsd4_process_cb_update()
authorChuck Lever <chuck.lever@oracle.com>
Thu, 17 Oct 2024 15:03:53 +0000 (11:03 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 14 Dec 2024 18:51:07 +0000 (19:51 +0100)
commitc5d90f9302742985a5078e42ac38de42c364c44a
treea4161561945f056ec2bf1f6f3dfe1f7988534f2ftree
parent74b5756de7324f07caa06a43070a9f762a585e12commit | diff
NFSD: Prevent NULL dereference in nfsd4_process_cb_update()

[ Upstream commit 1e02c641c3a43c88cecc08402000418e15578d38 ]

@ses is initialized to NULL. If __nfsd4_find_backchannel() finds no
available backchannel session, setup_callback_client() will try to
dereference @ses and segfault.

Fixes: dcbeaa68dbbd ("nfsd4: allow backchannel recovery")
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
fs/nfsd/nfs4callback.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git