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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00554.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
5a1436beec5744029f3ac90b6fe71a698dcd6155 affected < ae7e95638d956d556d74b9abb9e780d3bd3dcd9e
5a1436beec5744029f3ac90b6fe71a698dcd6155 affected < 1d7f07df450bac3301938fbc4251f2611be4084e
5a1436beec5744029f3ac90b6fe71a698dcd6155 affected < 76641449b28979ebd6c02e9598367e119e385236
5a1436beec5744029f3ac90b6fe71a698dcd6155 affected < 9f1cbca178c03188e201ed175251372149bb25f2
5a1436beec5744029f3ac90b6fe71a698dcd6155 affected < eb34e243df57e32f4c08fa191f3602ea19076276
5a1436beec5744029f3ac90b6fe71a698dcd6155 affected < 77d55bc8675ee851ed639dc9be77325a8024cf67
5a1436beec5744029f3ac90b6fe71a698dcd6155 affected < 46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a
5a1436beec5744029f3ac90b6fe71a698dcd6155 affected < 915b692e6cb723aac658c25eb82c58fd81235110
Linux Linux affected
Version Status Constraints
2.6.34 affected —
0 unaffected < 2.6.34
5.10.258 unaffected ≤ 5.10.*
5.15.209 unaffected ≤ 5.15.*
6.1.175 unaffected ≤ 6.1.*
6.6.140 unaffected ≤ 6.6.*
6.12.86 unaffected ≤ 6.12.*
6.18.27 unaffected ≤ 6.18.*
7.0.4 unaffected ≤ 7.0.*
7.1 unaffected ≤ *

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Linux Subscribe
Linux Kernel Subscribe

Project Subscriptions

Vendors Products
Linux Subscribe
Linux Kernel Subscribe
Advisories
Source ID Title
Debian DLA Debian DLA DLA-4664-1 linux security update
Debian DLA Debian DLA DLA-4665-1 linux security update
Ubuntu USN Ubuntu USN USN-8488-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8489-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-8490-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8491-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-8492-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8493-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8488-2 Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN Ubuntu USN USN-8492-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8493-2 Linux kernel (Oracle) vulnerabilities
Ubuntu USN Ubuntu USN USN-8497-1 Linux kernel (Low Latency) vulnerabilities
Ubuntu USN Ubuntu USN USN-8498-1 Linux kernel (NVIDIA Tegra) vulnerabilities
Ubuntu USN Ubuntu USN USN-8499-1 Linux kernel (Xilinx) vulnerabilities
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43493.mbox cve-icon
https://git.kernel.org/stable/c/1d7f07df450bac3301938fbc4251f2611be4084e cve-icon cve-icon
https://git.kernel.org/stable/c/46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a cve-icon cve-icon
https://git.kernel.org/stable/c/76641449b28979ebd6c02e9598367e119e385236 cve-icon cve-icon
https://git.kernel.org/stable/c/77d55bc8675ee851ed639dc9be77325a8024cf67 cve-icon cve-icon
https://git.kernel.org/stable/c/915b692e6cb723aac658c25eb82c58fd81235110 cve-icon cve-icon
https://git.kernel.org/stable/c/9f1cbca178c03188e201ed175251372149bb25f2 cve-icon cve-icon
https://git.kernel.org/stable/c/ae7e95638d956d556d74b9abb9e780d3bd3dcd9e cve-icon cve-icon
https://git.kernel.org/stable/c/eb34e243df57e32f4c08fa191f3602ea19076276 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-43493 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-43493 cve-icon
History

Mon, 01 Jun 2026 17:00:00 +0000

Type Values Removed Values Added
References

Wed, 20 May 2026 16:45:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

 cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Wed, 20 May 2026 02:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-746

Wed, 20 May 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-770
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Tue, 19 May 2026 13:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-746

Tue, 19 May 2026 11:30:00 +0000

Type Values Removed Values Added
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.
Title crypto: pcrypt - Fix handling of MAY_BACKLOG requests
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-06-14T17:45:17.419Z

Reserved: 2026-05-01T14:12:56.013Z

Link: CVE-2026-43493

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-19T12:16:19.020

Modified: 2026-06-17T10:49:48.600

Link: CVE-2026-43493

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-05-19T00:00:00Z

Links: CVE-2026-43493 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-20T17:30:35Z

Weaknesses