CVE-2026-43493

CriticalCVSS 9.8/10Last modified Oct 19, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-390

Affected software

VendorProductVersions
LinuxLinux>= 5a1436beec5744029f3ac90b6fe71a698dcd6155, < ae7e95638d956d556d74b9abb9e780d3bd3dcd9e; >= 5a1436beec5744029f3ac90b6fe71a698dcd6155, < 1d7f07df450bac3301938fbc4251f2611be4084e; >= 5a1436beec5744029f3ac90b6fe71a698dcd6155, < 76641449b28979ebd6c02e9598367e119e385236; >= 5a1436beec5744029f3ac90b6fe71a698dcd6155, < 9f1cbca178c03188e201ed175251372149bb25f2; >= 5a1436beec5744029f3ac90b6fe71a698dcd6155, < eb34e243df57e32f4c08fa191f3602ea19076276; >= 5a1436beec5744029f3ac90b6fe71a698dcd6155, < 77d55bc8675ee851ed639dc9be77325a8024cf67; >= 5a1436beec5744029f3ac90b6fe71a698dcd6155, < 46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a; >= 5a1436beec5744029f3ac90b6fe71a698dcd6155, < 915b692e6cb723aac658c25eb82c58fd81235110
LinuxLinux2.6.34
SiemensSIMATIC S7-1500 TM MFP - GNU/Linux subsystem< *

References

Timeline

Published
May 19, 2026
Last modified
Oct 19, 2026
NVD status
Modified

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CVE-2026-43493: Critical severity, CVSS 9.8 | Vulnix