UBUNTU-CVE-2026-31415

In the Linux kernel, the following vulnerability has been resolved: ipv6: avoid overflows in ip6datagramsendctl Yiming Qian reported : I believe I found a locally triggerable kernel bug in the IPv6 sendmsg ancillary-data path that can panic the kernel via skbunderpanic local DoS. The core issue i...

CVE-2026-31415

CVE-2026-31415 affects Linux kernels where ipv6: ip6_datagram_send_ctl() accepts repeated IPV6_DSTOPTS, accumulating into a 16-bit opt_flen without deduplicating. This can cause opt_flen to wrap while dst1opt points to the last 2048-byte destination-options header, leading to under-headroom pushe...