CVE-2026-43493
Received Received - Intake
Linux Kernel MAY_BACKLOG Request Handling Fix

Publication date: 2026-05-19

Last updated on: 2026-05-20

Assigner: kernel.org

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.
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Meta Information
Published
2026-05-19
Last Modified
2026-05-20
Generated
2026-05-20
AI Q&A
2026-05-19
EPSS Evaluated
2026-05-19
NVD
CVE-2026-43493
EUVD
EUVD-2026-30884
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is related to the Linux kernel's crypto subsystem, specifically the pcrypt module. It involves improper handling of MAY_BACKLOG requests, which can return an EBUSY error. The fix involves correctly handling this error by checking for EBUSY and filtering out EINPROGRESS notifications.


How can this vulnerability impact me? :

This vulnerability relates to the handling of MAY_BACKLOG requests in the Linux kernel's crypto pcrypt module. Improper handling could cause MAY_BACKLOG requests to return EBUSY errors and mishandle EINPROGRESS notifications. This could potentially affect the stability or performance of cryptographic operations in the kernel.


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