CVE-2026-43421: linux kernel from 3.11 (inclusive), before 6.12.78 (exclusive), from 6.13 (inclusive), before 6.18.19 (exclusive)…

Affected technology

linux kernel · from 3.11 (inclusive), before 6.12.78 (exclusive)
linux

linux kernel · from 6.13 (inclusive), before 6.18.19 (exclusive)
linux

linux kernel · from 6.19 (inclusive), before 6.19.9 (exclusive)
linux

linux kernel · 7.0 · update rc1
linux

linux kernel · 7.0 · update rc2
linux

linux kernel · 7.0 · update rc3
linux

Linux · 40d133d7f542616cf9538508a372306e626a16e9 to before 7c97366f5dac5255e60a317ffe3a5b18f3745547, 40d133d7f542616cf9538508a372306e626a16e9 to before 36c41e9724c9a7a7cda37f5a4e9d94f25c8031c4, 40d133d7f542616cf9538508a372306e626a16e9 to before 93f116c3393a22acab96ad1bef12b2572eb80ca4, 40d133d7f542616cf9538508a372306e626a16e9 to before e584cb58a2ea7ff4d3a4bc43d5ca512ed3ecb77d, 40d133d7f542616cf9538508a372306e626a16e9 to before 85acaba2f42b557499bab3608307f17bf13beb69, 40d133d7f542616cf9538508a372306e626a16e9 to before ec35c1969650e7cb6c8a91020e568ed46e3551b0
Linux

Linux · 3.11
Linux

SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · 0 to before *
Siemens

Component: Not specified by the source
Function: instance
File: drivers/usb/gadget/function/f_ncm.c, drivers/usb/gadget/function/u_ether.c, drivers/usb/gadget/function/u_ether.h, drivers/usb/gadget/function/u_ncm.h

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.