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evp: prevent underflow in base64 decoding
[oweals/openssl.git]
/
crypto
/
evp
/
encode.c
diff --git
a/crypto/evp/encode.c
b/crypto/evp/encode.c
index 28546a84bc2b61e4150af841d264a9d66386c52a..4654bdc61a64838353562a57ec85e14a623fdfa2 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