CVE-2026-64305

Local memory corruption via unlocked service-table traversal

Published Jul 25, 2026 · Updated Jul 25, 2026

Race condition in the Linux Kernel QAT driver allows local users to corrupt memory or trigger a use-after-free during service changes. Service lifecycle functions traverse service_table without service_lock while concurrent registration or removal can free or corrupt an entry. Exploitation requires low-privileged local access and a successful race in the QAT subsystem; the resulting corruption can crash the kernel or alter execution.

CVSS severity7.0
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

Race condition in the Linux Kernel QAT driver allows local users to corrupt memory or trigger a use-after-free during service changes. Service lifecycle functions traverse service_table without service_lock while concurrent registration or removal can free or corrupt an entry. Exploitation requires low-privileged local access and a successful race in the QAT subsystem; the resulting corruption can crash the kernel or alter execution.

The record

CVE
CVE-2026-64305
Published
Jul 25, 2026
Updated
Jul 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-366, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 25, 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=3.17
  2. Affected versionversion=d8cba25d2c68992a6e7c1d329b690a9ebe01167d <0dbcecea740d943002c1cbdafa39bdfc108e32a5
  3. Affected versionversion=d8cba25d2c68992a6e7c1d329b690a9ebe01167d <222fa7b453b612f4407f260146d89a2ce2bc831d
  4. Affected versionversion=d8cba25d2c68992a6e7c1d329b690a9ebe01167d <5c6f845e77ec35f9b7b047cc8f9789bf397cdd3e
  5. Affected versionversion=d8cba25d2c68992a6e7c1d329b690a9ebe01167d <c3c5925791cff3b84d313293fd60f384d877d793

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3.17; version=d8cba25d2c68992a6e7c1d329b690a9ebe01167d <0dbcecea740d943002c1cbdafa39bdfc108e32a5; version=d8cba25d2c68992a6e7c1d329b690a9ebe01167d <222fa7b453b612f4407f260146d89a2ce2bc831d; version=d8cba25d2c68992a6e7c1d329b690a9ebe01167d <5c6f845e77ec35f9b7b047cc8f9789bf397cdd3e; version=d8cba25d2c68992a6e7c1d329b690a9ebe01167d <c3c5925791cff3b84d313293fd60f384d877d793

Published CVSS scores

7.0Red HatCVSS:3.1/AV:L/AC:H/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-366Race Condition within a Thread
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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