CVE-2026-31685

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> netfilter: ip6t_eui64: reject invalid MAC header for all packets<br /> <br /> `eui64_mt6()` derives a modified EUI-64 from the Ethernet source address<br /> and compares it with the low 64 bits of the IPv6 source address.<br /> <br /> The existing guard only rejects an invalid MAC header when<br /> `par-&gt;fragoff != 0`. For packets with `par-&gt;fragoff == 0`, `eui64_mt6()`<br /> can still reach `eth_hdr(skb)` even when the MAC header is not valid.<br /> <br /> Fix this by removing the `par-&gt;fragoff != 0` condition so that packets<br /> with an invalid MAC header are rejected before accessing `eth_hdr(skb)`.