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| author | Ahmed S. Darwish <darwish.07@gmail.com> | 2008-03-13 12:32:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-03-13 13:11:43 -0700 |
| commit | b500ce8d24d1f14426643da5f6fada28c1f60533 (patch) | |
| tree | 17b6084b29434a968f787e238548a843126e2ec3 /fs/proc/task_mmu.c | |
| parent | 93d74463d018ddf05c169ad399e62e90e0f82fc0 (diff) | |
| download | op-kernel-dev-b500ce8d24d1f14426643da5f6fada28c1f60533.zip op-kernel-dev-b500ce8d24d1f14426643da5f6fada28c1f60533.tar.gz | |
smackfs: do not trust `count' in inodes write()s
Smackfs write() implementation does not put a higher bound on the number of
bytes to copy from user-space. This may lead to a DOS attack if a malicious
`count' field is given.
Assure that given `count' is exactly the length needed for a /smack/load rule.
In case of /smack/cipso where the length is relative, assure that `count'
does not exceed the size needed for a buffer representing maximum possible
number of CIPSO 2.2 categories.
Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc/task_mmu.c')
0 files changed, 0 insertions, 0 deletions
