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| author | Amir Goldstein <amir73il@gmail.com> | 2024-04-16 21:14:52 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2024-04-17 16:06:50 +0300 |
| commit | 795bb82d12a16a4cee42845b0e4c7e3276574e5d (patch) | |
| tree | e82347600c4058d7e4c08ca42d7afd9af065405a /fs/nfsd/vfs.h | |
| parent | a5e57b4d370c6d320e5bfb0c919fe00aee29e039 (diff) | |
| download | linux-795bb82d12a16a4cee42845b0e4c7e3276574e5d.tar.xz | |
fsnotify: fix UAF from FS_ERROR event on a shutting down filesystem
Protect against use after free when filesystem calls fsnotify_sb_error()
during fs shutdown.
Move freeing of sb->s_fsnotify_info to destroy_super_work(), because it
may be accessed from fs shutdown context.
Reported-by: syzbot+5e3f9b2a67b45f16d4e6@syzkaller.appspotmail.com
Suggested-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/linux-fsdevel/20240416173211.4lnmgctyo4jn5fha@quack3/
Fixes: 07a3b8d0bf72 ("fsnotify: lazy attach fsnotify_sb_info state to sb")
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Message-Id: <20240416181452.567070-1-amir73il@gmail.com>
Diffstat (limited to 'fs/nfsd/vfs.h')
0 files changed, 0 insertions, 0 deletions