CVE-2026-64507: x86/bugs: Enable IBPB flush on BPF JIT allocation
CSIRTS triage
- What
- The system enables IBPB flush on BPF JIT allocation to enhance security.
- Who is affected
- Deployments on x86 architecture utilizing BPF JIT.
- Urgency
- Remediation is recommended to improve security posture, with no known exploits reported.
- Action
- Ensure the system is updated to the latest kernel version.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64507
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-2026-645070.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-64507 | coverage & exploitation status | NVD · CVE.org |
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