diff options
Diffstat (limited to 'sys/netinet6/ah_output.c')
| -rw-r--r-- | sys/netinet6/ah_output.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sys/netinet6/ah_output.c b/sys/netinet6/ah_output.c index 477c589534c8..df9f4d592bc5 100644 --- a/sys/netinet6/ah_output.c +++ b/sys/netinet6/ah_output.c @@ -521,6 +521,15 @@ ah4_finaldst(m) q = (u_char *)(ip + 1); i = 0; while (i < optlen) { + if (i + IPOPT_OPTVAL >= optlen) + return NULL; + if (q[i + IPOPT_OPTVAL] == IPOPT_EOL || + q[i + IPOPT_OPTVAL] == IPOPT_NOP || + i + IPOPT_OLEN < optlen) + ; + else + return NULL; + switch (q[i + IPOPT_OPTVAL]) { case IPOPT_EOL: i = optlen; /* bye */ |