CVE-2026-31685

Опубликовано: 25 апр. 2026

Источник: nvd

CVSS3: 9.4

EPSS Низкий

Описание

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).

Ссылки

Уязвимые конфигурации

Конфигурация 1

Одно из

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Версия от 2.6.12.1 (включая) до 6.6.136 (исключая)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Версия от 6.7 (включая) до 6.12.83 (исключая)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Версия от 6.13 (включая) до 6.18.24 (исключая)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Версия от 6.19 (включая) до 6.19.14 (исключая)

cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*

EPSS

Процентиль: 26%

0.00337

Низкий

9.4 Critical

CVSS3

Дефекты

NVD-CWE-noinfo

Связанные уязвимости

CVE-2026-31685

CVSS3: 9.4

ubuntu

3 месяца назад

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)`.

CVE-2026-31685

CVSS3: 7.1

redhat

3 месяца назад

CVE-2026-31685

CVSS3: 5.5

msrc

3 месяца назад

netfilter: ip6t_eui64: reject invalid MAC header for all packets

CVE-2026-31685

CVSS3: 9.4

debian

3 месяца назад

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

GHSA-hf2p-g3jq-w2mx

CVSS3: 9.4

github

3 месяца назад

EPSS

Процентиль: 26%

0.00337

Низкий

9.4 Critical

CVSS3

Дефекты

NVD-CWE-noinfo