CVE-2025-40075
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 versions
Linux kernel versions
4.13
and later are affected. Fixed in
6.12.63,
6.17.3,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-40075 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/07613a95326ebad2d1b88d883cd72546025a4f3e
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PatchKernel patch commithttps://git.kernel.org/stable/c/4b89397807eb04986427c4786d065e9442834ad4
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PatchKernel patch commithttps://git.kernel.org/stable/c/50c127a69cd6285300931853b352a1918cfa180f
Frequently asked questions
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What is CVE-2025-40075?
CVE-2025-40075 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.13 onward and has been patched in 6.12.63, 6.17.3 and 6.18. CVE-2025-40075 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2025-40075?
Yes — CVE-2025-40075 has been patched. Fixed versions include 6.12.63, 6.17.3 and 6.18. If you are running Linux kernel 4.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-40075 actively exploited?
No — CVE-2025-40075 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.