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evp: prevent underflow in base64 decoding
[openssl.git]
/
crypto
/
evp
/
encode.c
diff --git
a/crypto/evp/encode.c
b/crypto/evp/encode.c
index e278a1b5d400fd95ce6fd09f51f7af1666acc0a0..a4f7674d9dac89797d6ce9507c596360211de400 100644
(file)
--- a/
crypto/evp/encode.c
+++ b/
crypto/evp/encode.c
@@
-324,6
+324,7
@@
int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
v=EVP_DecodeBlock(out,d,n);
n=0;
if (v < 0) { rv=0; goto end; }
+ if (eof > v) { rv=-1; goto end; }
ret+=(v-eof);
}
else