CVE-2026-43493

CRITICAL

crypto: pcrypt - Fix handling of MAY_BACKLOG requests

Title source: cna
STIX 2.1

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 (5)

Core 5

Scores

CVSS v3 9.8
EPSS 0.0006
EPSS Percentile 19.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

Status published
Products (12)
Linux/Linux < 2.6.34
Linux/Linux 2.6.34
Linux/Linux 5a1436beec5744029f3ac90b6fe71a698dcd6155 - 46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a
Linux/Linux 5a1436beec5744029f3ac90b6fe71a698dcd6155 - 77d55bc8675ee851ed639dc9be77325a8024cf67
Linux/Linux 5a1436beec5744029f3ac90b6fe71a698dcd6155 - 915b692e6cb723aac658c25eb82c58fd81235110
Linux/Linux 5a1436beec5744029f3ac90b6fe71a698dcd6155 - 9f1cbca178c03188e201ed175251372149bb25f2
Linux/Linux 5a1436beec5744029f3ac90b6fe71a698dcd6155 - eb34e243df57e32f4c08fa191f3602ea19076276
Linux/Linux 6.12.86 - 6.12.*
Linux/Linux 6.18.27 - 6.18.*
Linux/Linux 6.6.140 - 6.6.*
... and 2 more
Published May 19, 2026
Tracked Since May 19, 2026