CVE-2026-43493

CRITICAL 9.8CVE-2026-43493 · Published 19/05/2026 · updated 19/10/2026

In short

CVE-2026-43493 is a CRITICAL (CVSS 9.8) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 0.68%, higher than 52.4% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

Description

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.

References

git.kernel.org/stable/c/1d7f07df450bac3301938fbc4251f2611be4084e · Patch
git.kernel.org/stable/c/46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a · Patch
git.kernel.org/stable/c/76641449b28979ebd6c02e9598367e119e385236 · Patch
git.kernel.org/stable/c/77d55bc8675ee851ed639dc9be77325a8024cf67 · Patch
git.kernel.org/stable/c/915b692e6cb723aac658c25eb82c58fd81235110 · Patch
git.kernel.org/stable/c/9f1cbca178c03188e201ed175251372149bb25f2 · Patch
git.kernel.org/stable/c/ae7e95638d956d556d74b9abb9e780d3bd3dcd9e · Patch
git.kernel.org/stable/c/eb34e243df57e32f4c08fa191f3602ea19076276 · Patch
cert-portal.siemens.com/productcert/html/ssa-784472.html

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