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Message-Id: <20220704005932.2217025-1-niejianglei2021@163.com>
Date: Mon, 4 Jul 2022 08:59:32 +0800
From: Jianglei Nie <niejianglei2021@....com>
To: zohar@...ux.ibm.com, dmitry.kasatkin@...il.com, jmorris@...ei.org,
serge@...lyn.com
Cc: linux-integrity@...r.kernel.org,
linux-security-module@...r.kernel.org,
linux-kernel@...r.kernel.org,
Jianglei Nie <niejianglei2021@....com>
Subject: [PATCH] ima/evm: Fix potential memory leak in ima_init_crypto()
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@....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
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