haraldwolff/qemu-patch-raspberry4
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slirp: Prevent sending ICMP error replies to source-only addresses

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This triggered the related assert in arp_table_search.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
This commit is contained in:
Jan Kiszka 2012-02-08 10:05:45 +01:00
parent 9f1134d4aa
commit 6612db12d5
1 changed files with 5 additions and 0 deletions
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5
slirp/ip_icmp.c
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@ -262,6 +262,11 @@ icmp_error(struct mbuf *msrc, u_char type, u_char code, int minsize,
#endif
if(ip->ip_off & IP_OFFMASK) goto end_error; /* Only reply to fragment 0 */
/* Do not reply to source-only IPs */
if ((ip->ip_src.s_addr & htonl(~(0xf << 28))) == 0) {
goto end_error;
}
shlen=ip->ip_hl << 2;
s_ip_len=ip->ip_len;
if(ip->ip_p == IPPROTO_ICMP) {