CVE-2026-43493 PUBLISHED

crypto: pcrypt - Fix handling of MAY_BACKLOG requests

Assigner: Linux
Reserved: 01.05.2026 Published: 19.05.2026 Updated: 19.05.2026

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.

Vendor	Linux
Product	Linux
Versions	Default: unaffected affected from 5a1436beec5744029f3ac90b6fe71a698dcd6155 to 9f1cbca178c03188e201ed175251372149bb25f2 (excl.) affected from 5a1436beec5744029f3ac90b6fe71a698dcd6155 to eb34e243df57e32f4c08fa191f3602ea19076276 (excl.) affected from 5a1436beec5744029f3ac90b6fe71a698dcd6155 to 77d55bc8675ee851ed639dc9be77325a8024cf67 (excl.) affected from 5a1436beec5744029f3ac90b6fe71a698dcd6155 to 46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a (excl.) affected from 5a1436beec5744029f3ac90b6fe71a698dcd6155 to 915b692e6cb723aac658c25eb82c58fd81235110 (excl.)

Vendor	Linux
Product	Linux
Versions	Default: affected Version 2.6.34 is affected unaffected from 0 to 2.6.34 (excl.) unaffected from 6.6.140 to 6.6.* (incl.) unaffected from 6.12.86 to 6.12.* (incl.) unaffected from 6.18.27 to 6.18.* (incl.) unaffected from 7.0.4 to 7.0.* (incl.) unaffected from 7.1-rc1 to * (incl.)