Cyber Resilience

CVE-2026-43283

High

Published: 06 May 2026

Published
06 May 2026
Modified
08 May 2026
KEV Added
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Patch
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CVSS Score v3.1 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0012 2.2th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-43283 is a high-severity an unspecified weakness vulnerability in Linux Linux Kernel. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 2.2th 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: net: ethernet: ec_bhf: Fix dma_free_coherent() dma handle dma_free_coherent() in error path takes priv->rx_buf.alloc_len as the dma handle. This would lead to improper unmapping of the buffer. Change the dma handle…

more

to priv->rx_buf.alloc_phys.

CWE(s)
NVD-CWE-noinfo

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
Why these techniques?

Kernel DMA buffer unmapping bug in network driver enables local privilege escalation via memory corruption.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

Affected Assets

linux
linux kernel
3.15 · 3.15.1 — 5.10.252 · 5.11 — 5.15.202 · 5.16 — 6.1.165

Mitigating Controls

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

References