CVE-2025-68243
In the Linux kernel, the following vulnerability has been resolved: NFS: Check the TLS certificate fields in nfs_match_client() If the TLS security policy is of type RPC_XPRTSEC_TLS_X509, then the cert_serial and privkey_serial fields need to match as well since they define the client's identity, as presented to the server.
Affected versions
Linux kernel versions
6.17
and later are affected. Fixed in
6.17.9,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-68243 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/b8fa37219074811c04d4ecb742c73e2b296da6a8
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PatchKernel patch commithttps://git.kernel.org/stable/c/fb2cba0854a7f315c8100a807a6959b99d72479e
Frequently asked questions
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What is CVE-2025-68243?
CVE-2025-68243 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.17 onward and has been patched in 6.17.9 and 6.18. CVE-2025-68243 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-2025-68243?
Yes — CVE-2025-68243 has been patched. Fixed versions include 6.17.9 and 6.18. If you are running Linux kernel 6.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-68243 actively exploited?
No — CVE-2025-68243 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.