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(parent: 34dffc7) | patch
NFSv4.2: Fix a memory stomp in decode_attr_security_label
authorTrond Myklebust <trond.myklebust@hammerspace.com>
Tue, 18 Oct 2022 22:21:14 +0000 (18:21 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 31 Dec 2022 12:14:13 +0000 (13:14 +0100)
commit51899eefd1a6c0e1b2fa8d4a0a93356252bfbe7f
tree7b238d1bdb3e9557b362e3fe3991348e048ea786tree | snapshot
parent34dffc77ddf665d87ab8ef348db2214cb476cef3commit | diff
NFSv4.2: Fix a memory stomp in decode_attr_security_label

[ Upstream commit 43c1031f7110967c240cb6e922adcfc4b8899183 ]

We must not change the value of label->len if it is zero, since that
indicates we stored a label.

Fixes: b4487b935452 ("nfs: Fix getxattr kernel panic and memory overflow")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
fs/nfs/nfs4xdr.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git