dhcp/backport-Fix-CVE-2022-2929.patch

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2022-10-17 16:07:35 +08:00
Conflict:NA
Reference:https://downloads.isc.org/isc/dhcp/4.4.3-P1/patches/CVE-2022-2929.4-4-3.diff
---
common/options.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/common/options.c b/common/options.c
index 40238f7..11b1961 100644
--- a/common/options.c
+++ b/common/options.c
@@ -454,16 +454,16 @@ int fqdn_universe_decode (struct option_state *options,
while (s < &bp -> data[0] + length + 2) {
len = *s;
if (len > 63) {
- log_info ("fancy bits in fqdn option");
- return 0;
+ log_info ("label length exceeds 63 in fqdn option");
+ goto bad;
}
if (len == 0) {
terminated = 1;
break;
}
if (s + len > &bp -> data [0] + length + 3) {
- log_info ("fqdn tag longer than buffer");
- return 0;
+ log_info ("fqdn label longer than buffer");
+ goto bad;
}
if (first_len == 0) {
--
2.27.0