CVE-2025-40075

tcp_metrics: use dst_dev_net_rcu()

HIGH

8.1

CVSS Score

Published: October 28, 2025 at 11:48 AM UTC

Updated: October 21, 2026 at 01:18 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH8.1

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

90%

4.134a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36

Vendor states this is fixed in 07613a95326ebad2d1b88d883cd72546025a4f3e (fixed)

Vendor states this is fixed in 4b89397807eb04986427c4786d065e9442834ad4 (fixed)

Vendor states this is fixed in 50c127a69cd6285300931853b352a1918cfa180f (fixed)

Vendor states this is fixed in 4.13 (unaffected)

Vendor states this is fixed in 6.12.63 (unaffected)

Vendor states this is fixed in 6.17.3 (unaffected)

Vendor states this is fixed in 6.18 (unaffected)

Vendor states this is fixed in 6.6.160 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

Source: cverecord

https://git.kernel.org/stable/c/07613a95326ebad2d1b88d883cd72546025a4f3e

Source: cverecord

https://git.kernel.org/stable/c/50c127a69cd6285300931853b352a1918cfa180f

Source: cverecord

https://git.kernel.org/stable/c/4b89397807eb04986427c4786d065e9442834ad4

Source: cverecord

https://git.kernel.org/stable/c/7012bea5622396b37566fbdc059f7c6a6c279d74

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHLinux

Vector?

Quick Info

StatusDEFERRED

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