diff options
Diffstat (limited to 'fs/ext4/crypto_key.c')
| -rw-r--r-- | fs/ext4/crypto_key.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/ext4/crypto_key.c b/fs/ext4/crypto_key.c index 363e4c6bf37f..15ebac242288 100644 --- a/fs/ext4/crypto_key.c +++ b/fs/ext4/crypto_key.c @@ -313,6 +313,12 @@ retry: } down_read(&keyring_key->sem); ukp = user_key_payload(keyring_key); + if (!ukp) { + /* key was revoked before we acquired its semaphore */ + res = -EKEYREVOKED; + up_read(&keyring_key->sem); + goto out; + } if (ukp->datalen != sizeof(struct ext4_encryption_key)) { res = -EINVAL; up_read(&keyring_key->sem); |