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.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-25)

CWE

CWE-662

Published

2026-07-25

Modified

2026-10-24

Record from

the NVD, synced 2026-10-24

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/3920c5f6edc341729d20d0507e466c6d3b11f372
• https://git.kernel.org/stable/c/4711ca06bd169a2cbc9cc59a6de2ed512c41a880
• https://git.kernel.org/stable/c/81ce16d938db9b88cdc231522c0358395ae8c6b5
• https://git.kernel.org/stable/c/82789a44415e3e31168229421b138278dfb16412
• https://git.kernel.org/stable/c/83fa1397d5853de1e27dd52ec44b068ff358ca18

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