CVE-2026-64507 - x86/bugs: Enable IBPB flush on BPF JIT allocation

CVE-2026-64507 - x86/bugs: Enable IBPB flush on BPF JIT allocation

https://cvefeed.io/rssfeed/latest.atom / Sat, 07/25/2026 - 13:07
CVE ID :CVE-2026-64507
Published : July 25, 2026, 10:17 a.m. | 33 minutes ago
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.
Severity: 0.0 | NA
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