CVE-2024-56543

Wireless service interrupt via uninitialized self-peer cleanup

Published Dec 27, 2024 · Updated May 11, 2026

Improper cleanup in Linux kernel 6.3 through 6.6.63, 6.7 through 6.11.10, and 6.12 through 6.12.1 allows local users to interrupt wireless service. ath12k_dp_rx_peer_tid_cleanup passes a self peer that never received datapath setup to fragment cleanup, which accesses its uninitialized rx_tid::ab member. Reachability requires local privileges, an ath12k device such as QCN9274 or WCN7850, and a driver core halt or reset; no data read or write is reported.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper cleanup in Linux kernel 6.3 through 6.6.63, 6.7 through 6.11.10, and 6.12 through 6.12.1 allows local users to interrupt wireless service. ath12k_dp_rx_peer_tid_cleanup passes a self peer that never received datapath setup to fragment cleanup, which accesses its uninitialized rx_tid::ab member. Reachability requires local privileges, an ath12k device such as QCN9274 or WCN7850, and a driver core halt or reset; no data read or write is reported.

The record

CVE
CVE-2024-56543
Published
Dec 27, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 27, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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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 <1a0c640ce1cdcde3eb131a0c1e70ca1ed7cf27cb
  3. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <a052483d495a4dc62c814f2fd17d0ceb308fc6a6
  4. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <a1e2d6738b29c74c2024eb23167dfff68aadd984
  5. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <d73da0dd2853887b7aab71f0d572fd3314dafafe

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.3; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <1a0c640ce1cdcde3eb131a0c1e70ca1ed7cf27cb; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <a052483d495a4dc62c814f2fd17d0ceb308fc6a6; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <a1e2d6738b29c74c2024eb23167dfff68aadd984; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <d73da0dd2853887b7aab71f0d572fd3314dafafe

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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