CVE-2025-21887: linux kernel from 5.10.188 (inclusive), before 5.11 (exclusive), from 5.15.121 (inclusive), before 5.15.179…

Affected technology

linux kernel · from 5.10.188 (inclusive), before 5.11 (exclusive)
linux

linux kernel · from 5.15.121 (inclusive), before 5.15.179 (exclusive)
linux

linux kernel · from 6.1.39 (inclusive), before 6.1.130 (exclusive)
linux

linux kernel · from 6.3.13 (inclusive), before 6.4 (exclusive)
linux

linux kernel · from 6.4.4 (inclusive), before 6.6.81 (exclusive)
linux

linux kernel · from 6.7 (inclusive), before 6.12.18 (exclusive)
linux

linux kernel · from 6.13 (inclusive), before 6.13.6 (exclusive)
linux

linux kernel · 6.14 · update rc1
linux

linux kernel · 6.14 · update rc2
linux

linux kernel · 6.14 · update rc3
linux

linux kernel · 6.14 · update rc4
linux

Linux · 714ba10a6dd19752a349e59aa875f3288ccb59b9 to before f77618291836168eca99e89cd175256f928f5e64, 62f29ca45f832e281fc14966ac25f6ff3bd121ca to before 4b49d939b5a79117f939b77cc67efae2694d9799, e4f2a1feebb3f209a0fca82aa53507a5b8be4d53 to before a7c41830ffcd17b2177a95a9b99b270302090c35, b07d5cc93e1b28df47a72c519d09d0a836043613 to before 64455c8051c3aedc71abb7ec8d47c80301f99f00, b07d5cc93e1b28df47a72c519d09d0a836043613 to before 3594aad97e7be2557ca9fa9c931b206b604028c8, b07d5cc93e1b28df47a72c519d09d0a836043613 to before 60b4b5c1277fc491da9e1e7abab307bfa39c2db7, b07d5cc93e1b28df47a72c519d09d0a836043613 to before c84e125fff2615b4d9c259e762596134eddd2f27, 33ab4dd6202f359558a0a2678b94d1b9994c17e5, 1ecdc55e5cd9f70f8d7513802971d4cffb9f77af, 5.10.188 to before 5.10.247, 5.15.121 to before 5.15.179, 6.1.39 to before 6.1.130, 6.3.13 to before 6.4, 6.4.4 to before 6.5
Linux

Linux · 6.5
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 · V3.1.7 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 · V3.1.7 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 · V3.1.7 to before *
Siemens

Component: Not specified by the source
File: fs/overlayfs/copy_up.c

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. The description does not specify what an attacker can achieve beyond these rated impacts.