CVE-2023-53764

Kernel memory corruption via unlocked peer-list traversal

Published Dec 8, 2025 · Updated Aug 5, 2026

Use-after-free in the Linux kernel ath12k driver 6.3 through 6.3.3 allows physically proximate attackers to corrupt kernel memory. The WBM receive-error path calls ath12k_peer_find_by_id() without ab->base_lock, so concurrent peer deletion can free an entry during the list walk. A radio-range attacker can race crafted frames against association churn on QCN9274 or WCN7850 hardware, enabling kernel data exposure, forged frame delivery, an oops, or a soft lockup.

CVSS severity8.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use-after-free in the Linux kernel ath12k driver 6.3 through 6.3.3 allows physically proximate attackers to corrupt kernel memory. The WBM receive-error path calls ath12k_peer_find_by_id() without ab->base_lock, so concurrent peer deletion can free an entry during the list walk. A radio-range attacker can race crafted frames against association churn on QCN9274 or WCN7850 hardware, enabling kernel data exposure, forged frame delivery, an oops, or a soft lockup.

The record

CVE
CVE-2023-53764
Published
Dec 8, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=6.3
  2. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <95a389e2ff3212d866cc51c77d682d2934074eb8
  3. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <9faf7c696610a348ca94a224d55c946b19b3279d

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.3; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <95a389e2ff3212d866cc51c77d682d2934074eb8; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <9faf7c696610a348ca94a224d55c946b19b3279d

Published CVSS scores

8.8LinuxCVSS:3.1/AV:A/AC:L/PR:N/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo