9.4

CVE-2026-31685

netfilter: ip6t_eui64: reject invalid MAC header for all packets

In the Linux kernel, the following vulnerability has been resolved:

netfilter: ip6t_eui64: reject invalid MAC header for all packets

`eui64_mt6()` derives a modified EUI-64 from the Ethernet source address
and compares it with the low 64 bits of the IPv6 source address.

The existing guard only rejects an invalid MAC header when
`par->fragoff != 0`. For packets with `par->fragoff == 0`, `eui64_mt6()`
can still reach `eth_hdr(skb)` even when the MAC header is not valid.

Fix this by removing the `par->fragoff != 0` condition so that packets
with an invalid MAC header are rejected before accessing `eth_hdr(skb)`.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
LinuxLinux Kernel Version >= 2.6.12.1 < 6.6.136
LinuxLinux Kernel Version >= 6.7 < 6.12.83
LinuxLinux Kernel Version >= 6.13 < 6.18.24
LinuxLinux Kernel Version >= 6.19 < 6.19.14
LinuxLinux Kernel Version2.6.12 Update-
LinuxLinux Kernel Version2.6.12 Updaterc2
LinuxLinux Kernel Version2.6.12 Updaterc3
LinuxLinux Kernel Version2.6.12 Updaterc4
LinuxLinux Kernel Version2.6.12 Updaterc5
LinuxLinux Kernel Version7.0 Updaterc1
LinuxLinux Kernel Version7.0 Updaterc2
LinuxLinux Kernel Version7.0 Updaterc3
LinuxLinux Kernel Version7.0 Updaterc4
LinuxLinux Kernel Version7.0 Updaterc5
LinuxLinux Kernel Version7.0 Updaterc6
LinuxLinux Kernel Version7.0 Updaterc7
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.06% 0.187
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 9.4 3.9 5.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
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