CVE-2026-64507
MEDIUM 1 PoC
MEDIUM
Priority: 0.01
BB Relevance:
46/100
Published: 2026-07-25
Modified: 2026-11-12
First seen: 2026-11-03
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
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.
Affected Software (9)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 57631054fae6dcc9c892ae6310b58bbb6f6e5048 < 25dbcd31781e2bc3cd63d873af1fcd06f863a126 |
| Linux | Linux | 57631054fae6dcc9c892ae6310b58bbb6f6e5048 < cb27f3bf915cc0f20fc0c48da9059304e39ebd35 |
| Linux | Linux | 57631054fae6dcc9c892ae6310b58bbb6f6e5048 < 9354248fc1c33a844ca1872761f6668b393e8c37 |
| Linux | Linux | 57631054fae6dcc9c892ae6310b58bbb6f6e5048 < 8a4c8af9ae67eb072d90d1b339f14d27a82bd2a1 |
| Linux | Linux | 57631054fae6dcc9c892ae6310b58bbb6f6e5048 < 52440e15d9628f8f239373c0f2e5e8f92feea2df |
| Linux | Linux | 57631054fae6dcc9c892ae6310b58bbb6f6e5048 < a3af84b0fa00ead01fcd0e28b5d773ff25990a0d |
| Linux | Linux | 5.18 |
| linux | linux_kernel | 5.18 – 6.1.183 |
| linux | linux_kernel | 7.2 |