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ssl3_mac(): Fix possible divide by zero bug

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Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19912)
This commit is contained in:
zhailiangliang
2022-12-22 12:19:03 +01:00
committed by Tomas Mraz
parent 467b0492c1
commit 624efd2ba6
1 changed files with 1 additions and 1 deletions
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ssl/record/methods/ssl3_meth.c
+1 -1
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@@ -221,7 +221,7 @@ static int ssl3_mac(OSSL_RECORD_LAYER *rl, TLS_RL_RECORD *rec, unsigned char *md
hash = rl->md_ctx;
t = EVP_MD_CTX_get_size(hash);
if (t < 0)
if (t <= 0)
return 0;
md_size = t;
npad = (48 / md_size) * md_size;