CVE-2026-64428

highCVSS 7.1covered by 3 sourcesfirst seen 2026-07-14

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. https://security-tracker.debian.org/tracker/DSA-6405-1

CSIRTS triage

Other

What: This vulnerability involves the use of raw_spinlock_t in the IRQ startup path for GPIO.
Who is affected: Deployments using the GPIO subsystem.
Urgency: Remediation is advised to ensure proper synchronization, with no current exploitation reported.
Action: Apply the patch for CVE-2026-64428.

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

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Exploitation outlook

Low exploitation risk0.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.

Advisory coverage (3)

unknownDSA-6405-1 linux - security updatedebian · 2026-07-31
unknownCVE-2026-64428: In the Linux kernel, the following vulnerability has been resolved: gpio: sch: use raw_spinloc…nvd · 2026-07-25
highCVE-2026-64428: gpio: sch: use raw_spinlock_t in the irq startup pathmsrc · 2026-07-14

External references

NVD record for CVE-2026-64428

CVE.org record

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