Check for EVP_CIPHER_CTX_new failure (#836)

If this OpenSSL function fails to allocate memory it returns NULL.

diff --git a/libarchive/archive_cryptor.c b/libarchive/archive_cryptor.c
index 2a51dfe1d86ad333ef5136d378082b037a25dbd5..ced52fd7062ad1271291081a0a7ff8f2134995b8 100644 (file)
--- a/libarchive/archive_cryptor.c
+++ b/libarchive/archive_cryptor.c
@@ -302,7 +302,8 @@ aes_ctr_release(archive_crypto_ctx *ctx)
 static int
 aes_ctr_init(archive_crypto_ctx *ctx, const uint8_t *key, size_t key_len)
 {
-       ctx->ctx = EVP_CIPHER_CTX_new();
+       if ((ctx->ctx = EVP_CIPHER_CTX_new()) == NULL)
+               return -1;
 
        switch (key_len) {
        case 16: ctx->type = EVP_aes_128_ecb(); break;