Cyber Resilience

CVE-2026-43493

CriticalUpdated

Published: 19 May 2026

Published
19 May 2026
Modified
26 June 2026
KEV Added
—
Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0055 42.1th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-43493 is a critical-severity an unspecified weakness vulnerability in Linux Linux Kernel. Its CVSS base score is 9.8 (Critical).

Operationally, ranked at the 42.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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.

CWE(s)
NVD-CWE-noinfo

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

Insufficient information to map techniques.
Confidence: LOW · MITRE ATT&CK Enterprise v19.0

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Affected Assets

linux
linux kernel
2.6.34 — 5.10.258 · 5.11 — 5.15.209 · 5.16 — 6.1.175

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References