CVE-2026-31421: linux kernel from 4.15 (inclusive), before 5.10.253 (exclusive), from 5.11 (inclusive), before 5.15.203 (exclusive)…

Affected technology

linux kernel · from 4.15 (inclusive), before 5.10.253 (exclusive)
linux

linux kernel · from 5.11 (inclusive), before 5.15.203 (exclusive)
linux

linux kernel · from 5.16 (inclusive), before 6.1.168 (exclusive)
linux

linux kernel · from 6.2 (inclusive), before 6.6.134 (exclusive)
linux

linux kernel · from 6.7 (inclusive), before 6.12.81 (exclusive)
linux

linux kernel · from 6.13 (inclusive), before 6.18.22 (exclusive)
linux

linux kernel · from 6.19 (inclusive), before 6.19.12 (exclusive)
linux

linux kernel · 7.0 · update rc1
linux

linux kernel · 7.0 · update rc2
linux

linux kernel · 7.0 · update rc3
linux

linux kernel · 7.0 · update rc4
linux

linux kernel · 7.0 · update rc5
linux

linux kernel · 7.0 · update rc6
linux

Linux · 1abf272022cf1d18469405f47b4ec49c6a3125db to before d6d5bd62a09650856e1e2010eb09853eba0d64e1, 1abf272022cf1d18469405f47b4ec49c6a3125db to before febf64ca79a2d6540ab6e5e197fa0f4f7e84473e, 1abf272022cf1d18469405f47b4ec49c6a3125db to before 3d41f9a314afa94b1c7c7c75405920123220e8cd, 1abf272022cf1d18469405f47b4ec49c6a3125db to before 18328eff2f97d1a6adcdb6d4a0f42f2f83a31e28, 1abf272022cf1d18469405f47b4ec49c6a3125db to before 5cf41031922c154aa5ccda8bcdb0f5e6226582ec, 1abf272022cf1d18469405f47b4ec49c6a3125db to before 3cb055df9e8625ce699a259d8178d67b37f2b160, 1abf272022cf1d18469405f47b4ec49c6a3125db to before 96426c348def662b06bfdc65be3002905604927a, 1abf272022cf1d18469405f47b4ec49c6a3125db to before faeea8bbf6e958bf3c00cb08263109661975987c
Linux

Linux · 4.15
Linux

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.6 to before *
Siemens

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.5 to before *
Siemens

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.7 to before *
Siemens

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.6 to before *
Siemens

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.5 to before *
Siemens

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.7 to before *
Siemens

SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.6 to before *
Siemens

SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.5 to before *
Siemens

SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.7 to before *
Siemens

Component: Not specified by the source
File: net/sched/cls_fw.c

Attack conditions (NVD, CVSS 3.1): Local · Low privileges required · No user interaction required

What an attacker can do

NVD’s CVSS 3.1 assessment (base score 5.5/10) rates confidentiality and integrity impact as none; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.