CVE-2026-64015: security/keys: fix missed RCU read section on lookup
CSIRTS triage
- What
- The security keys may miss RCU read section on lookup.
- Who is affected
- Deployments using security keys.
- Urgency
- Remediation is high urgency due to the high severity of the issue.
- Action
- Apply the patch for CVE-2026-64015.
AI-assisted analysis generated from the source advisory — verify against the original.
Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64015
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-2026-640150.16% 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-2026-64015 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownMultiples vulnérabilités dans le noyau Linux de Red Hat (11 septembre 2026)cert-fr-avis
- unknownUSN-8729-1: Linux kernel vulnerabilitiesubuntu
- unknownexploitedUSN-8728-1: Linux kernel (GCP) vulnerabilitiesubuntu
- unknownUSN-8664-1: Linux kernel (NVIDIA BaseOS) vulnerabilitiesubuntu
- unknownUSN-8663-1: Linux kernel (NVIDIA) vulnerabilitiesubuntu
- highUSN-8618-1: Linux kernel vulnerabilitiesubuntu
- highUSN-8603-1: Linux kernel (Azure) vulnerabilitiesubuntu
- highUSN-8593-1: Linux kernel vulnerabilitiesubuntu
- highCVE-2026-64015: In the Linux kernel, the following vulnerability has been resolved: security/keys: fix missed …nvd
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