CVE-2026-64507

mediumpriority · track · 10EPSS 0.002 · 14 %ileexploit · PoCDEEUFRRU
grimoire priorityP1 · Urgent
Exploitable?
Public exploit
1 exploit · PoC
Likely / severe?
0.23% (14th) EPSS
CVSS 5.5 · medium
Is it mine?
44 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-26

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

5.5
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.5mediumAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-440US
03

exploits (1)

Public proof-of-concept and weaponised exploit code.

04

affected products (44)

Products and version ranges known to be affected.

showing 20 of 44
05

advisories (5)

Vendor and ecosystem advisories describing this.

06

also known as (4)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundcertfrNVDCVE.orgMITRE
published 2026-07-25modified 2026-10-26
08

references (17)

External citations — patches, advisories, analysis.

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