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| author | Boshi Wang <wangboshi@huawei.com> | 2017-10-20 16:01:03 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-09 18:42:38 +0100 |
| commit | 80f93e24ecfcbbb95667e7e65f75e7646fd0905e (patch) | |
| tree | 5a96ad30ef054ca60da4f6d9c35f5d0de36ee475 | |
| parent | 71ce1cac5b4db3e4004db76e3b61f47d7558438e (diff) | |
ima: fix hash algorithm initialization
[ Upstream commit ebe7c0a7be92bbd34c6ff5b55810546a0ee05bee ]
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>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 c21f09bf8b99..98289ba2a2e6 100644 --- a/security/integrity/ima/ima_main.c +++ b/security/integrity/ima/ima_main.c @@ -52,6 +52,8 @@ 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; } @@ -61,6 +63,8 @@ static int __init hash_setup(char *str) break; } } + if (i == HASH_ALGO__LAST) + return 1; out: hash_setup_done = 1; return 1; |