SymbX/systemd
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

dhcp6: do not use input value before checking

Browse Source
This commit is contained in:
Yu Watanabe
2021-02-23 18:49:11 +09:00
parent 2b767e9222
commit cf6c33bd6b
1 changed files with 4 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/libsystemd-network/dhcp6-option.c
+4 -3
View File
@@ -41,14 +41,15 @@ typedef struct DHCP6PDPrefixOption {
#define DHCP6_OPTION_IA_PD_LEN (sizeof(struct ia_pd))
#define DHCP6_OPTION_IA_TA_LEN (sizeof(struct ia_ta))
static int option_append_hdr(uint8_t **buf, size_t *buflen, uint16_t optcode,
size_t optlen) {
DHCP6Option *option = (DHCP6Option*) *buf;
static int option_append_hdr(uint8_t **buf, size_t *buflen, uint16_t optcode, size_t optlen) {
DHCP6Option *option;
assert_return(buf, -EINVAL);
assert_return(*buf, -EINVAL);
assert_return(buflen, -EINVAL);
option = (DHCP6Option*) *buf;
if (optlen > 0xffff || *buflen < optlen + offsetof(DHCP6Option, data))
return -ENOBUFS;