kernel: net: Fix icmp host relookup triggering ip_rt_bug

A denial of service vulnerability was found in the Linux kernel. icmproutelookup creates input routes for locally generated packets during xfrm relookup ICMP traffic. Then it will set the input route dst-out = iprtbug to skb for DESTUNREACH, leading to loss of availability of the system...

CVE-2024-56647

A denial of service vulnerability was found in the Linux kernel. icmproutelookup creates input routes for locally generated packets during xfrm relookup ICMP traffic. Then it will set the input route dst-out = iprtbug to skb for DESTUNREACH, leading to loss of availability of the system. Mitigati...

CVE-2024-56647

In the Linux kernel, the following vulnerability has been resolved: net: Fix icmp host relookup triggering iprtbug arp link failure may trigger iprtbug while xfrm enabled, call trace is: WARNING: CPU: 0 PID: 0 at net/ipv4/route.c:1241 iprtbug+0x14/0x20 Modules linked in: CPU: 0 UID: 0 PID: 0 Comm...

CVE-2024-56647 net: Fix icmp host relookup triggering ip_rt_bug

In the Linux kernel, the following vulnerability has been resolved: net: Fix icmp host relookup triggering iprtbug arp link failure may trigger iprtbug while xfrm enabled, call trace is: WARNING: CPU: 0 PID: 0 at net/ipv4/route.c:1241 iprtbug+0x14/0x20 Modules linked in: CPU: 0 UID: 0 PID: 0 Comm...

CVE-2024-56647 net: Fix icmp host relookup triggering ip_rt_bug

In the Linux kernel, the following vulnerability has been resolved: net: Fix icmp host relookup triggering iprtbug arp link failure may trigger iprtbug while xfrm enabled, call trace is: WARNING: CPU: 0 PID: 0 at net/ipv4/route.c:1241 iprtbug+0x14/0x20 Modules linked in: CPU: 0 UID: 0 PID: 0 Comm...

CVE-2024-56647

CVE-2024-56647: In the Linux kernel, icmp host relookup can trigger ip_rt_bug when ARP/link conditions and xfrm are involved. The fix skips icmp relookup for locally generated packets (e.g., ICMP errors) to avoid dst->out being ip_rt_bug on loopback and similar scenarios. Reproduced scenario s...