This is a note to let you know that I've just added the patch titled
ima: fix hash algorithm initialization
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: ima-fix-hash-algorithm-initialization.patch and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Wed Dec 6 17:39:55 CET 2017
From: Boshi Wang wangboshi@huawei.com Date: Fri, 20 Oct 2017 16:01:03 +0800 Subject: ima: fix hash algorithm initialization
From: Boshi Wang wangboshi@huawei.com
[ 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 --- security/integrity/ima/ima_main.c | 4 ++++ 1 file changed, 4 insertions(+)
--- 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;
Patches currently in stable-queue which might be from wangboshi@huawei.com are
queue-4.9/ima-fix-hash-algorithm-initialization.patch