CVE-2026-43493 Details
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.
A vulnerability in the Linux kernel's crypto component, specifically in the pcrypt module, has been addressed. This issue involved improper handling of MAY_BACKLOG requests, which can return a busy status. The kernel now correctly manages these requests by checking for the busy signal and filtering out in-progress notifications. This vulnerability affects the Linux kernel stable tree.
Users can upgrade to the latest version of the Linux kernel stable tree to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/1d7f07df450bac3301938fbc4251f2611be4084e | kernel.org | Patch |
| https://git.kernel.org/stable/c/46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a | kernel.org | Patch |
| https://git.kernel.org/stable/c/76641449b28979ebd6c02e9598367e119e385236 | kernel.org | Patch |
| https://git.kernel.org/stable/c/77d55bc8675ee851ed639dc9be77325a8024cf67 | kernel.org | Patch |
| https://git.kernel.org/stable/c/915b692e6cb723aac658c25eb82c58fd81235110 | kernel.org | Patch |
| https://git.kernel.org/stable/c/9f1cbca178c03188e201ed175251372149bb25f2 | kernel.org | Patch |
| https://git.kernel.org/stable/c/ae7e95638d956d556d74b9abb9e780d3bd3dcd9e | kernel.org | Patch |
| https://git.kernel.org/stable/c/eb34e243df57e32f4c08fa191f3602ea19076276 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 2.6.34, < 5.10.258 >= 5.11, < 5.15.209 >= 5.16, < 6.1.175 >= 6.2, < 6.6.140 >= 6.7, < 6.12.86 >= 6.13, < 6.18.27 >= 6.19, < 7.0.4 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 26, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 1, 2026 | CVE Modified | kernel.org |
| May 20, 2026 | CVE Modified | kernel.org |
| May 19, 2026 | New CVE Received | kernel.org |