CVE-2026-80623: coresight: ete: Always save state on power down

lowCVSS 2.5CVE-2026-80623

CSIRTS triage

vendor: Linux product: Linux KernelOther

What: The ARM CoreSight ETE driver fails to always save state on power down, potentially losing trace data.
Who is affected: Systems using ARM CoreSight Embedded Trace Macrocell on supported processors.
Urgency: Low severity (CVSS 2.5); patch in routine updates to ensure correct trace data preservation.
Action: Apply kernel security patch addressing CVE-2026-80623 when available from your distribution.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: low — CVSS 2.5
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80623

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-806230.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-80623	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for coresight

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-80623: In the Linux kernel, the following vulnerability has been resolved: coresight: ete: Always sav…nvd · 2026-08-28
highCVE-2026-72485: In the Linux kernel, the following vulnerability has been resolved: coresight: platform: defer…nvd · 2026-08-15
highCVE-2026-64402: coresight: ultrasoc-smb: Fix OOB write in smb_sync_perf_buffer()msrc · 2026-08-06
highCVE-2026-64402: In the Linux kernel, the following vulnerability has been resolved: coresight: ultrasoc-smb: F…nvd · 2026-07-25
lowCVE-2026-46272: coresight: tmc-etr: Fix race condition between sysfs and perf modemsrc · 2026-06-09