Yüksek CVSS 7.8

CVE-2026-43329: Linux Kernel: yığın (heap) taşması

Yayın: 8 Mayıs 2026 17:16 · Güncelleme: 6 Kasım 2026 10:19

Açıklama (NVD)

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: strictly check for maximum number of actions The maximum number of flowtable hardware offload actions in IPv6 is: * ethernet mangling (4 payload actions, 2 for each ethernet address) * SNAT (4 payload actions) * DNAT (4 payload actions) * Double VLAN (4 vlan actions, 2 for popping vlan, and 2 for pushing) for QinQ. * Redirect (1 action) Which makes 17, while the maximum is 16. But act_ct supports for tunnels actions too. Note that payload action operates at 32-bit word level, so mangling an IPv6 address takes 4 payload actions. Update flow_action_entry_next() calls to check for the maximum number of supported actions. While at it, rise the maximum number of actions per flow from 16 to 24 so this works fine with IPv6 setups.

Özet bilgiler

Ürün: Linux Linux Kernel
CVSS v3.1: 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: %0,18 (yüzdelik 7)
CWE: CWE-122
Yama: Mevcut

Etkilenen sürümler

Ürün	Başlangıç	Bitiş	Düzeltildi
linux-linux-kernel	5.5	—	5.15.203
linux-linux-kernel	5.16	—	6.1.168
linux-linux-kernel	6.2	—	6.6.134
linux-linux-kernel	6.7	—	6.12.81
linux-linux-kernel	6.13	—	6.18.22
linux-linux-kernel	6.19	—	6.19.12
linux-linux-kernel	7.0	7.0	—
linux-linux-kernel	7.0	7.0	—
linux-linux-kernel	7.0	7.0	—
linux-linux-kernel	7.0	7.0	—
linux-linux-kernel	7.0	7.0	—
linux-linux-kernel	7.0	7.0	—

Kaynaklar

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