kernel: netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6()

A flaw was found in the Linux kernel's netfilter component, specifically within the nfrejectipv6 module. This vulnerability arises when the system attempts to process an IPv6 packet where the network device's header length is unexpectedly zero, leading to a kernel crash. A remote attacker could...

UBUNTU-CVE-2024-50256

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfrejectipv6: fix potential crash in nfsendreset6 I got a syzbot report without a repro 1 crashing in nfsendreset6 I think the issue is that dev-hardheaderlen is zero, and we attempt later to push an Ethernet header. U...