diff options
| author | THOBY Simon <[email protected]> | 2021-08-22 08:55:26 +0000 |
|---|---|---|
| committer | Mimi Zohar <[email protected]> | 2021-08-23 22:22:00 +0000 |
| commit | cb181da161963eddc9de0000de6ab2c7942be219 (patch) | |
| tree | cf41ca44b1e7b216b75f9ffdc0c13fe776d144e6 /fs/ext4/fast_commit.c | |
| parent | Merge branch 'restrict-digest-alg-v8' into next-integrity (diff) | |
| download | kernel-cb181da161963eddc9de0000de6ab2c7942be219.tar.gz kernel-cb181da161963eddc9de0000de6ab2c7942be219.zip | |
IMA: reject unknown hash algorithms in ima_get_hash_algo
The new function validate_hash_algo() assumed that ima_get_hash_algo()
always return a valid 'enum hash_algo', but it returned the
user-supplied value present in the digital signature without
any bounds checks.
Update ima_get_hash_algo() to always return a valid hash algorithm,
defaulting on 'ima_hash_algo' when the user-supplied value inside
the xattr is invalid.
Signed-off-by: THOBY Simon <[email protected]>
Reported-by: [email protected]
Fixes: 50f742dd9147 ("IMA: block writes of the security.ima xattr with unsupported algorithms")
Reviewed-by: Lakshmi Ramasubramanian <[email protected]>
Signed-off-by: Mimi Zohar <[email protected]>
Diffstat (limited to 'fs/ext4/fast_commit.c')
0 files changed, 0 insertions, 0 deletions