NetSight
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critical9.4

CVE-2026-53131

In the Linux kernel, the following vulnerability has been resolved: netfilter: require Ethernet MAC header before using eth_hdr() `ip6t_eui64`, `xt_mac`, the `…

Impact

In the Linux kernel, the following vulnerability has been resolved: netfilter: require Ethernet MAC header before using eth_hdr() `ip6t_eui64`, `xt_mac`, the `bitmap:ip,mac`, `hash:ip,mac`, and `hash:mac` ipset types, and `nf_log_syslog` access `eth_hdr(skb)` after either assuming that the skb is associated with an Ethernet device or checking only that the `ETH_HLEN` bytes at `skb_mac_header(skb)` lie between `skb->head` and `skb->data`. Make these paths first verify that the skb is associated with an Ethernet device, that the MAC header was set, and that it spans at least a full Ethernet header before accessing `eth_hdr(skb)`.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 2.6.12.1 before 5.15.210
from 5.16 before 6.1.176
from 6.2 before 6.6.143
from 6.7 before 6.12.94
from 6.13 before 6.18.36
from 6.19 before 7.0.13

Weakness classification

CWE-125

References