Bug 2479812 (CVE-2026-43493) - CVE-2026-43493 kernel: crypto: pcrypt - Fix handling of MAY_BACKLOG requests
Summary: CVE-2026-43493 kernel: crypto: pcrypt - Fix handling of MAY_BACKLOG requests
Keywords:
Status: NEW
Alias: CVE-2026-43493
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-19 12:01 UTC by OSIDB Bzimport
Modified: 2026-10-19 12:38 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:57251 0 None None None 2026-08-20 05:22:19 UTC
Red Hat Product Errata RHSA-2026:64770 0 None None None 2026-09-08 01:49:36 UTC
Red Hat Product Errata RHSA-2026:66000 0 None None None 2026-09-09 14:12:30 UTC
Red Hat Product Errata RHSA-2026:66180 0 None None None 2026-09-09 22:05:11 UTC
Red Hat Product Errata RHSA-2026:74174 0 None None None 2026-10-01 09:01:33 UTC
Red Hat Product Errata RHSA-2026:75560 0 None None None 2026-10-05 00:36:08 UTC
Red Hat Product Errata RHSA-2026:85000 0 None None None 2026-10-19 12:38:38 UTC

Description OSIDB Bzimport 2026-05-19 12:01:22 UTC 
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.
Comment 1 Alexander B 2026-05-19 16:23:15 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43493.mbox
Comment 3 errata-xmlrpc 2026-08-20 05:22:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:57251 https://access.redhat.com/errata/RHSA-2026:57251
Comment 4 errata-xmlrpc 2026-09-08 01:49:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:64770 https://access.redhat.com/errata/RHSA-2026:64770
Comment 5 errata-xmlrpc 2026-09-09 14:12:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:66000 https://access.redhat.com/errata/RHSA-2026:66000
Comment 6 errata-xmlrpc 2026-09-09 22:05:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:66180 https://access.redhat.com/errata/RHSA-2026:66180
Comment 7 Jon Orris 2026-10-01 09:01:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:74174 https://access.redhat.com/errata/RHSA-2026:74174
Comment 8 Jon Orris 2026-10-05 00:36:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:75560 https://access.redhat.com/errata/RHSA-2026:75560
Comment 9 Jon Orris 2026-10-19 12:38:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:85000 https://access.redhat.com/errata/RHSA-2026:85000
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