CVE-2026-64099

Local privilege escalation via freed CPU job

Published Jul 19, 2026 · Updated Jul 19, 2026

Use-after-free in Linux Kernel V3D CPU job submission allows local users to corrupt kernel memory through a crafted ioctl. The error path releases cpu_job through v3d_job_cleanup(), then dereferences its query arrays for manual kvfree() operations while leaking syncobj references. Access to an affected Broadcom V3D render node is required; a controlled submission failure can crash the kernel or enable local privilege escalation.

CVSS severity7.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Linux Kernel V3D CPU job submission allows local users to corrupt kernel memory through a crafted ioctl. The error path releases cpu_job through v3d_job_cleanup(), then dereferences its query arrays for manual kvfree() operations while leaking syncobj references. Access to an affected Broadcom V3D render node is required; a controlled submission failure can crash the kernel or enable local privilege escalation.

The record

CVE
CVE-2026-64099
Published
Jul 19, 2026
Updated
Jul 19, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.8
  2. Affected versionversion=9ba0ff3e083f6a4a0b6698f06bfff74805fefa5f <0f8efc45740b0628a787d1b0be8a0ddabd700625
  3. Affected versionversion=9ba0ff3e083f6a4a0b6698f06bfff74805fefa5f <69c2a1fec2e7ca25598180816f3bc56e1842eb41
  4. Affected versionversion=9ba0ff3e083f6a4a0b6698f06bfff74805fefa5f <acd55ea40d03e06f20a9986363019e0e5173990e
  5. Affected versionversion=9ba0ff3e083f6a4a0b6698f06bfff74805fefa5f <b0fe80c0b9250b35e2211bf3117e7aca814a21b0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.8; version=9ba0ff3e083f6a4a0b6698f06bfff74805fefa5f <0f8efc45740b0628a787d1b0be8a0ddabd700625; version=9ba0ff3e083f6a4a0b6698f06bfff74805fefa5f <69c2a1fec2e7ca25598180816f3bc56e1842eb41; version=9ba0ff3e083f6a4a0b6698f06bfff74805fefa5f <acd55ea40d03e06f20a9986363019e0e5173990e; version=9ba0ff3e083f6a4a0b6698f06bfff74805fefa5f <b0fe80c0b9250b35e2211bf3117e7aca814a21b0

Published CVSS scores

7.8Linux Kernel CVE TeamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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