CVE-2025-40075: linux
CVSS: 8.1v3.1HighDeferred
AliasesUBUNTU-CVE-2025-40075DEBIAN-CVE-2025-40075
Published 28-10-2025Last modified 21-10-2026
Vulnerability summary
CVE-2025-40075 is a high (CVSS 8.1) vulnerability in linux. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 33.7% of scored vulnerabilities.
CVSS score
8.1/10
010
High · v3.1 (CVE.org)EPSS score
0.41%
0%100%
Low · +0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 24 · Related 24OPENSUSE-SU-2025:15702-1OPENSUSE-SU-2025:20172-1OPENSUSE-SU-2026:10301-1SUSE-SU-2025:4393-1SUSE-SU-2025:4422-1SUSE-SU-2025:4505-1SUSE-SU-2025:4516-1SUSE-SU-2025:4517-1SUSE-SU-2025:4521-1SUSE-SU-2026:0316-1SUSE-SU-2026:20012-1SUSE-SU-2026:20015-1SUSE-SU-2026:20021-1SUSE-SU-2026:20039-1SUSE-SU-2026:20059-1SUSE-SU-2026:20473-1SUSE-SU-2026:20496-1SUSE-SU-2026:20562-1USN-8029-1USN-8029-2USN-8029-3USN-8030-1USN-8048-1USN-8781-1
Timeline
- 28-10-2025PublishedVulnerability first disclosed.
- 21-10-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: tcp_metrics: use dst_dev_net_rcu() Replace three dst_dev() with a lockdep enabled helper.
CVSS metrics
5 scores · 4 sources · 2 versionsHigh 7.3Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NSourcesSingle source
High 8.1Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVDNIST8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.41%
Chance of exploitation in the next 30 days
Percentile
34%
Versus all other CVEs
30-day change
+0.03 pp
From 0.38% on 21-09-2026
21-09-202621-10-2026
EPSS score0.41%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Ubuntu155 products
- linuxAll versions (No fix recorded) | < 6.17.0-14.14
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 6.17.0-1007.7
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian1 product
- linuxAll versions (No fix recorded) | < 6.12.63-1 | < 6.17.6-1
Linux1 product
- linux≥ 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36, < 7012bea5622396b37566fbdc059f7c6a6c279d74 | ≥ 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36, < 4b89397807eb04986427c4786d065e9442834ad4 | ≥ 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36, < 07613a95326ebad2d1b88d883cd72546025a4f3e | ≥ 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36, < 50c127a69cd6285300931853b352a1918cfa180f | 4.13
3 vendors · 157 products
