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

Publication date: 2026-05-19

Last updated on: 2026-06-01

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
2026-06-01
Generated
2026-06-10
AI Q&A
2026-05-19
EPSS Evaluated
2026-06-08
NVD
CVE-2026-43493
EUVD
EUVD-2026-30884
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

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.

Impact Analysis

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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