CVE-2026-64312

Vulnerability Description

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 Score

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
• https://git.kernel.org/stable/c/ae93c5b3e2a2968b56d772ca1d06615927b7cc36
• https://git.kernel.org/stable/c/c4bd2f4c35b0e15b6040c2f7e7e7986780c066cf
• https://git.kernel.org/stable/c/ed459fe319376e876de433d12b6c6772e612ca36