CVE-2026-64507
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
- 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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Exploitation outlook
- Low exploitation risk0.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.
Advisory coverage (3)
- unknownDSA-6405-1 linux - security updatedebian · 2026-07-31
- unknownCVE-2026-64507: In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Enable IBPB flus…nvd · 2026-07-25
- mediumCVE-2026-64507: x86/bugs: Enable IBPB flush on BPF JIT allocationmsrc · 2026-07-14
External references
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