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Dnsmasq
Commit 0db0e0c2 authored by Giovanni Bajo's avatar Giovanni Bajo Committed by Simon Kelley
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Fix a bug in rdlen update while decompressing a name

parent ec2962ea
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Showing with 3 additions and 1 deletion
src/dnssec.c
View file @ 0db0e0c2
...@@ -141,8 +141,10 @@ static int process_domain_name(struct dns_header *header, size_t pktlen, ...@@ -141,8 +141,10 @@ static int process_domain_name(struct dns_header *header, size_t pktlen,
label_type = count & 0xC0; label_type = count & 0xC0;
if (label_type == 0xC0) if (label_type == 0xC0)
{ {
int l2;
if (p >= end) if (p >= end)
return 0; return 0;
l2 = *p++;
if (hops == 0) if (hops == 0)
{ {
if (p - *rdata > *rdlen) if (p - *rdata > *rdlen)
...@@ -152,7 +154,7 @@ static int process_domain_name(struct dns_header *header, size_t pktlen, ...@@ -152,7 +154,7 @@ static int process_domain_name(struct dns_header *header, size_t pktlen,
} }
if (++hops == 256) if (++hops == 256)
return 0; return 0;
p = (unsigned char*)header + (count & 0x3F) * 256 + *p; p = (unsigned char*)header + (count & 0x3F) * 256 + l2;
} }
else if (label_type == 0x00) else if (label_type == 0x00)
{ {
......
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