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: 2026-08-20 05:22 UTC (History)
2 users (show)

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

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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

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
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