---
cve: "CVE-2026-64507"
severity: "LOW"
cvss: 3.1
epss: "16%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-07-25 10:17:36"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-19T00:12:54+02:00"
---

# CVE-2026-64507

> 3.1 LOW

## Beschreibung

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.

## Patch verfügbar (OSV)

- Kernel ≥ 6.1.183
- Kernel ≥ 6.6.145
- Kernel ≥ 6.12.97
- Kernel ≥ 6.18.39
- Kernel ≥ 7.1.4

## Referenzen

- <https://git.kernel.org/stable/c/25dbcd31781e2bc3cd63d873af1fcd06f863a126>
- <https://git.kernel.org/stable/c/cb27f3bf915cc0f20fc0c48da9059304e39ebd35>
- <https://git.kernel.org/stable/c/9354248fc1c33a844ca1872761f6668b393e8c37>
- <https://git.kernel.org/stable/c/8a4c8af9ae67eb072d90d1b339f14d27a82bd2a1>
- <https://git.kernel.org/stable/c/52440e15d9628f8f239373c0f2e5e8f92feea2df>
- <https://git.kernel.org/stable/c/a3af84b0fa00ead01fcd0e28b5d773ff25990a0d>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-64507) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_