[PATCH] ima/evm: Fix potential memory leak in ima_init_crypto()

[Jianglei Nie]

ima_init_crypto() allocates a memory chunk for "ima_algo_array" with
kcalloc(). When some errors occur, the function jumps to "out_array"
and releases the "ima_algo_array[i].tfm". But "ima_algo_array" is
not released, which will lead to a memory leak.

We can release the ima_algo_array with kfree() when some errors occur
to fix the memory leak.

Signed-off-by: Jianglei Nie <niejianglei2021 at 163.com>
---
 security/integrity/ima/ima_crypto.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/security/integrity/ima/ima_crypto.c b/security/integrity/ima/ima_crypto.c
index a7206cc1d7d1..64499056648a 100644
--- a/security/integrity/ima/ima_crypto.c
+++ b/security/integrity/ima/ima_crypto.c
@@ -205,6 +205,7 @@ int __init ima_init_crypto(void)
 
 		crypto_free_shash(ima_algo_array[i].tfm);
 	}
+	kfree(ima_algo_array);
 out:
 	crypto_free_shash(ima_shash_tfm);
 	return rc;
-- 
2.25.1