CVE-2025-68188
In the Linux kernel, the following vulnerability has been resolved: tcp: use dst_dev_rcu() in tcp_fastopen_active_disable_ofo_check() Use RCU to avoid a pair of atomic operations and a potential UAF on dst_dev()->flags.
Affected versions
Linux kernel versions
4.12
and later are affected. Fixed in
6.12.58,
6.17.8,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-68188 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/06da08d9355bf8e2070459bbedbe372ccc02cc0e
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PatchKernel patch commithttps://git.kernel.org/stable/c/b62a59c18b692f892dcb8109c1c2e653b2abc95c
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PatchKernel patch commithttps://git.kernel.org/stable/c/bc2b881a0896c111c1041d8bb1f92a3b3873ace5
Frequently asked questions
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What is CVE-2025-68188?
CVE-2025-68188 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.12 onward and has been patched in 6.12.58, 6.17.8 and 6.18. CVE-2025-68188 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-2025-68188?
Yes — CVE-2025-68188 has been patched. Fixed versions include 6.12.58, 6.17.8 and 6.18. If you are running Linux kernel 4.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-68188 actively exploited?
No — CVE-2025-68188 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.