CVE-2026-43493: kernel: crypto: pcrypt - Fix handling of MAY_BACKLOG requests

Severity: Critical

CVSS Score: 9.8

In the Linux kernel, the following vulnerability has been resolved: crypto: pcrypt - Fix handling of MAY_BACKLOG requests MAY_BACKLOG requests can return EBUSY. Handle them by checking for that value and filtering out EINPROGRESS notifications.