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CVE-2025-21938: linux kernel from 5.18 (inclusive), before 6.1.131 (exclusive), from 6.2 (inclusive), before 6.6.83 (exclusive), from…
CVE-2025-21938. CVSS 3.1 base score 4.7 (MEDIUM, NVD). EPSS 0.00386 (percentile 0.30967), scored 14-Oct-2026.
Affected technology
linux kernel · from 5.18 (inclusive), before 6.1.131 (exclusive)
linux
linux kernel · from 6.2 (inclusive), before 6.6.83 (exclusive)
linux
linux kernel · from 6.7 (inclusive), before 6.12.19 (exclusive)
linux
linux kernel · from 6.13 (inclusive), before 6.13.7 (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 kernel · 6.14 · update rc5
linux
Linux · d045b9eb95a9b611c483897a69e7285aefdc66d7 to before f1404f368c40fc6a068dad72e4ee0824ee6a78ee, d045b9eb95a9b611c483897a69e7285aefdc66d7 to before f3fcdb2de9fdbed9d8c6a8eb2c5fbd7d6f54a4d8, d045b9eb95a9b611c483897a69e7285aefdc66d7 to before 4b228dae3d2cc6d9dce167449cd8fa9f028e9376, d045b9eb95a9b611c483897a69e7285aefdc66d7 to before 125ccafe6dd062901b5a0c31ee9038740fc8859e, d045b9eb95a9b611c483897a69e7285aefdc66d7 to before 022bfe24aad8937705704ff2e414b100cf0f2e1a
Linux
Linux · 5.18
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: net/mptcp/pm_netlink.c
Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
Attack conditions (NVD, 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 7.5/10) rates confidentiality and integrity impact as none; availability impact as high. NVD’s CVSS 3.1 assessment (base score 4.7/10) 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.
- CWE
- CWE-362
- CCR priority
- 18.9 /100 (P5)
- CVSS 3.1
- 4.7 /10 · CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H · NVD
- EPSS
- 0.00386 · percentile 0.30967 · 2026-10-14
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-15 09:24:28.011626+00:00 UTC
- GitHub Advisory Database · Source record · observed 2026-10-15 10:43:56.988652+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-15 09:18:22.406219+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2025-21938.html