CVE-2025-21864: linux kernel from 5.19 (inclusive), before 6.1.130 (exclusive), from 6.2 (inclusive), before 6.6.80 (exclusive), from…

Affected technology

linux kernel · from 5.19 (inclusive), before 6.1.130 (exclusive)
linux

linux kernel · from 6.2 (inclusive), before 6.6.80 (exclusive)
linux

linux kernel · from 6.7 (inclusive), before 6.12.17 (exclusive)
linux

linux kernel · from 6.13 (inclusive), before 6.13.5 (exclusive)
linux

linux kernel · 6.14 · update rc1
linux

linux kernel · 6.14 · update rc2
linux

linux kernel · 6.14 · update rc3
linux

Linux · 68822bdf76f10c3dc80609d4e2cdc1e847429086 to before 87858bbf21da239ace300d61dd209907995c0491, 68822bdf76f10c3dc80609d4e2cdc1e847429086 to before f1d5e6a5e468308af7759cf5276779d3155c5e98, 68822bdf76f10c3dc80609d4e2cdc1e847429086 to before cd34a07f744451e2ecf9005bb7d24d0b2fb83656, 68822bdf76f10c3dc80609d4e2cdc1e847429086 to before 69cafd9413084cd5012cf5d7c7ec6f3d493726d9, 68822bdf76f10c3dc80609d4e2cdc1e847429086 to before 9b6412e6979f6f9e0632075f8f008937b5cd4efd
Linux

Linux · 5.19
Linux

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

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.6 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 · V3.1.5 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 · V3.1.7 to before *
Siemens

SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · 0 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 · V3.1.6 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: include/net/tcp.h, net/ipv4/tcp_fastopen.c, net/ipv4/tcp_input.c, net/ipv4/tcp_ipv4.c

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

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

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

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 7.8/10) rates confidentiality, integrity and availability impact as high. NVD’s CVSS 3.1 assessment (base score 5.5/10) rates confidentiality and integrity impact as none; availability impact as high. Source advisory’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.