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Fix buffer overrun

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This commit is contained in:
Tesfa Mael 2019-11-22 10:33:17 -08:00
parent 1a3455110e
commit cf127ec05f
1 changed files with 2 additions and 2 deletions
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4
src/ssl.c
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@ -2409,7 +2409,7 @@ WOLFSSL_ABI
int wolfSSL_UseALPN(WOLFSSL* ssl, char *protocol_name_list,
word32 protocol_name_listSz, byte options)
{
char *list, *ptr, *token[10];
char *list, *ptr, *token[WOLFSSL_MAX_ALPN_NUMBER]={NULL};
word16 len;
int idx = 0;
int ret = WOLFSSL_FAILURE;
@ -2445,7 +2445,7 @@ int wolfSSL_UseALPN(WOLFSSL* ssl, char *protocol_name_list,
/* read all protocol name from the list */
token[idx] = XSTRTOK(list, ",", &ptr);
while (token[idx] != NULL)
while (token[idx] != NULL && idx < WOLFSSL_MAX_ALPN_NUMBER)
token[++idx] = XSTRTOK(NULL, ",", &ptr);
/* add protocol name list in the TLS extension in reverse order */