| commit | e40ff213898502d299351cc2fe1e350cd186f0d3 | [log] [tgz] |
|---|---|---|
| author | Theodore Ts'o <tytso@mit.edu> | Sun Apr 01 23:21:03 2018 -0400 |
| committer | Theodore Ts'o <tytso@mit.edu> | Sun Apr 01 23:21:03 2018 -0400 |
| tree | 48d024ff8abaa9efca5d38d93602188211c0130a | |
| parent | 54dd0e0a1b255f115f8647fc6fb93273251b01b9 [diff] |
ext4: force revalidation of directory pointer after seekdir(2) A malicious user could force the directory pointer to be in an invalid spot by using seekdir(2). Use the mechanism we already have to notice if the directory has changed since the last time we called ext4_readdir() to force a revalidation of the pointer. Reported-by: syzbot+1236ce66f79263e8a862@syzkaller.appspotmail.com Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org