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protocol-native: fix out-of-bounds access to SEC_LABEL hex table

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If buffer type char[] is 4-byte aligned, higher 3-byte on char could be non-zero if data is not initialized, which make 'buffer[i] >> 4' larger than 0x0f.
Use type uint8_t[] on SEC_LABEL buffer to fix it.
This commit is contained in:
Huang-Huang Bao 2021-03-21 19:58:02 +08:00 • committed by Wim Taymans
parent 471fffe4a3
commit 3bce026d67
1 changed files with 2 additions and 2 deletions
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4
src/modules/module-protocol-native.c
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@ -391,7 +391,7 @@ static const struct pw_protocol_native_connection_events server_conn_events = {
.need_flush = on_server_need_flush,
};
static bool check_print(const char *buffer, int len)
static bool check_print(const uint8_t *buffer, int len)
{
int i;
while (len > 1 && buffer[len-1] == 0)
@ -414,7 +414,7 @@ static struct client_data *client_new(struct server *s, int fd)
#endif
struct pw_context *context = protocol->context;
struct pw_properties *props;
char buffer[1024];
uint8_t buffer[1024];
struct protocol_data *d = pw_protocol_get_user_data(protocol);
int i, res;