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-rw-r--r--crypto/cmac/cmac.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/crypto/cmac/cmac.c b/crypto/cmac/cmac.c
index c5597a3f73b9..774e6dc91905 100644
--- a/crypto/cmac/cmac.c
+++ b/crypto/cmac/cmac.c
@@ -126,6 +126,8 @@ EVP_CIPHER_CTX *CMAC_CTX_get0_cipher_ctx(CMAC_CTX *ctx)
void CMAC_CTX_free(CMAC_CTX *ctx)
{
+ if (!ctx)
+ return;
CMAC_CTX_cleanup(ctx);
OPENSSL_free(ctx);
}