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9p: do not trust pdu content for stat item size
authorGertjan Halkes <gertjan@google.com>
Wed, 5 Sep 2018 06:41:29 +0000 (15:41 +0900)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 20 Apr 2019 07:07:51 +0000 (09:07 +0200)
commitfea7d0d3125d518f9b2549a114614a9ef052f2c3
treec43e2b8b3bddea7e3523721416736107d598d236tree | snapshot
parentc8ed05b1d8520f40395916438da9b38ce937a896commit | diff
9p: do not trust pdu content for stat item size

[ Upstream commit 2803cf4379ed252894f046cb8812a48db35294e3 ]

v9fs_dir_readdir() could deadloop if a struct was sent with a size set
to -2

Link: http://lkml.kernel.org/r/1536134432-11997-1-git-send-email-asmadeus@codewreck.org
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=88021
Signed-off-by: Gertjan Halkes <gertjan@google.com>
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
Signed-off-by: Sasha Levin <sashal@kernel.org>
fs/9p/vfs_dir.c diff | blob | blame | history
net/9p/protocol.c diff | blob | blame | history
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