DEBIAN-CVE-2026-74669

In the Linux kernel, the following vulnerability has been resolved:  ipvs: clear IPv4 options after rebasing tunnel ICMP errors  ipvsinicmp() rebases an skb from the outer ICMP packet to the quoted original request before passing it to icmpsend(). However, IPCB(skb)->opt still describes the outer IPv4 header.  A timestamp option in the outer header can therefore leave an offset that points into the quoted transport header after the rebase. ipoptionsecho() treats a byte at that stale location as the option length and copies it into the fixed-size option storage on the icmp_send() stack, causing a stack out-of-bounds write.  Clear the stale option metadata after resetting the network header. Keep the remaining control block fields, including the ingress interface used by the ICMP response path.