diff options
Diffstat (limited to 'libc/inet')
| -rw-r--r-- | libc/inet/resolv.c | 5 |
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) |