CVE-2026-64507

CVE Enrichment

EPSS: 0.16%
EPSS Percentile: 4.90%
CISA KEV: Not listed

Description

In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Enable IBPB flush on BPF JIT allocation Enable hardening against JIT spraying when Spectre-v2 mitigations are in use. Specifically, issue an IBPB flush on BPF JIT memory reuse. Skip enabling the IBPB flush if the BPF dispatcher is already using a retpoline sequence. This hardening applies only when BPF-JIT is in use. Guard the enabling under CONFIG_BPF_JIT so that bugs.c still builds with CONFIG_BPF_JIT=n.

Technical Details

CNA / NVD Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published: 25-Jul-2026 17:17
Last Modified: 20-Aug-2026 00:20
EPSS Date: 2026-10-16

References

Last enrichment sync: 17-Oct-2026 08:28
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

cBPF, Firefox SpiderMonkey, and Oracle GraalVM, and Linux kernel fixes have already been merged for CVE-2026-64507 and CVE-2026-64508. BTR Spectre v2 Variant Can Leak Linux Root Password Hashes in Minutes

CVE (1)

People (1)

Vendors (1)

Products (5)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.