CVE-2026-64312
In the Linux kernel, the following vulnerability has been resolved: crypto: pcrypt - restore callback for non-parallel fallback pcrypt installs pcrypt_aead_done() on the child AEAD request before trying to submit it through padata. If padata_do_parallel() returns -EBUSY, pcrypt falls back to calling the child AEAD directly. That fallback must not keep the padata completion callback. Otherwise an asynchronous completion runs pcrypt_aead_done() even though the request was never enrolled in padata. Restore the original request callback and callback data before calling the child AEAD directly. This keeps the fallback path aligned with a direct AEAD request while leaving the parallel path unchanged.
Affected versions
Linux kernel versions
5.10.231,
5.15.174,
6.1.120,
6.6.64,
6.12.2,
4.19.325,
5.4.287,
6.11.11,
6.13
and later are affected. Fixed in
5.10.261,
5.15.212,
6.1.178,
6.6.145,
6.12.96,
6.18.39,
7.1.4,
7.2-rc1
and their respective stable series.
References
8 totalFrequently asked questions
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What is CVE-2026-64312?
CVE-2026-64312 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.10.231 onward and has been patched in 5.10.261, 5.15.212, 6.1.178 and others. CVE-2026-64312 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-2026-64312?
Yes. CVE-2026-64312 has been patched. Fixed versions include 5.10.261, 5.15.212, 6.1.178 and others. If you are running Linux kernel 5.10.231 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-64312 actively exploited?
No. CVE-2026-64312 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.