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check buflen is less than BLAKE2B_BLOCKBYTES * 2

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Ruby Martin
2025-07-09 09:58:44 -06:00
parent 7b7c658668
commit 6de2557748
1 changed files with 2 additions and 0 deletions
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2
wolfcrypt/src/blake2b.c
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@@ -356,6 +356,8 @@ int blake2b_final( blake2b_state *S, byte *out, byte outlen )
} }
S->buflen -= BLAKE2B_BLOCKBYTES; S->buflen -= BLAKE2B_BLOCKBYTES;
if ( S->buflen >= (BLAKE2B_BLOCKBYTES * 2) )
return BAD_LENGTH_E;
XMEMCPY( S->buf, S->buf + BLAKE2B_BLOCKBYTES, (wolfssl_word)S->buflen ); XMEMCPY( S->buf, S->buf + BLAKE2B_BLOCKBYTES, (wolfssl_word)S->buflen );
} }