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-rw-r--r--libc/inet/resolv.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/libc/inet/resolv.c b/libc/inet/resolv.c
index eb663ac0f..5dca90746 100644
--- a/libc/inet/resolv.c
+++ b/libc/inet/resolv.c
@@ -669,11 +669,12 @@ int __decode_dotted(const unsigned char *packet,
bool measure = 1;
unsigned total = 0;
unsigned used = 0;
+ unsigned maxiter = 256;
if (!packet)
return -1;
- while (1) {
+ while (--maxiter) {
if (offset >= packet_len)
return -1;
b = packet[offset++];
@@ -710,6 +711,8 @@ int __decode_dotted(const unsigned char *packet,
else
dest[used++] = '\0';
}
+ if (!maxiter)
+ return -1;
/* The null byte must be counted too */
if (measure)