diff options
| author | Boshi Wang <wangboshi@huawei.com> | 2017-10-20 10:01:03 +0200 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2017-11-08 21:16:36 +0100 |
| commit | ebe7c0a7be92bbd34c6ff5b55810546a0ee05bee (patch) | |
| tree | 62bd4ad47d06f6c910befaa14465eda0114743e8 /security/integrity | |
| parent | EVM: Only complain about a missing HMAC key once (diff) | |
| download | linux-ebe7c0a7be92bbd34c6ff5b55810546a0ee05bee.tar.xz linux-ebe7c0a7be92bbd34c6ff5b55810546a0ee05bee.zip | |
ima: fix hash algorithm initialization
The hash_setup function always sets the hash_setup_done flag, even
when the hash algorithm is invalid. This prevents the default hash
algorithm defined as CONFIG_IMA_DEFAULT_HASH from being used.
This patch sets hash_setup_done flag only for valid hash algorithms.
Fixes: e7a2ad7eb6f4 "ima: enable support for larger default filedata hash
algorithms"
Signed-off-by: Boshi Wang <wangboshi@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Diffstat (limited to 'security/integrity')
| -rw-r--r-- | security/integrity/ima/ima_main.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c index d47f92e97f80..d6ddaad91e82 100644 --- a/security/integrity/ima/ima_main.c +++ b/security/integrity/ima/ima_main.c @@ -51,6 +51,8 @@ static int __init hash_setup(char *str) ima_hash_algo = HASH_ALGO_SHA1; else if (strncmp(str, "md5", 3) == 0) ima_hash_algo = HASH_ALGO_MD5; + else + return 1; goto out; } @@ -60,6 +62,8 @@ static int __init hash_setup(char *str) break; } } + if (i == HASH_ALGO__LAST) + return 1; out: hash_setup_done = 1; return 1; |