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authorBoshi Wang <wangboshi@huawei.com>2017-10-20 16:01:03 +0800
committerMimi Zohar <zohar@linux.vnet.ibm.com>2017-11-08 15:16:36 -0500
commitebe7c0a7be92bbd34c6ff5b55810546a0ee05bee (patch)
tree62bd4ad47d06f6c910befaa14465eda0114743e8 /security/integrity
parent0485d066d82c308e28e76b7fc6cdec46ae46eeb6 (diff)
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.c4
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;