CVE-2024-48873

Kernel crash via unchecked probe request allocation

Published Jan 11, 2025 · Updated May 11, 2026

NULL pointer dereference in the Linux rtw89 Wi-Fi driver from 6.4 allows local users to crash the kernel during 6 GHz RNR updates. The rtw89_update_6ghz_rnr_chan function passes the unchecked result of ieee80211_probereq_get to skb_put_data, which dereferences a NULL buffer after allocation failure. Reachability requires low-privileged local access and execution of the affected rtw89 6 GHz RNR update path; the documented consequence is limited to loss of availability.

CVSS severity5.5
Medium
EPSS probability0.21%
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

NULL pointer dereference in the Linux rtw89 Wi-Fi driver from 6.4 allows local users to crash the kernel during 6 GHz RNR updates. The rtw89_update_6ghz_rnr_chan function passes the unchecked result of ieee80211_probereq_get to skb_put_data, which dereferences a NULL buffer after allocation failure. Reachability requires low-privileged local access and execution of the affected rtw89 6 GHz RNR update path; the documented consequence is limited to loss of availability.

The record

CVE
CVE-2024-48873
Published
Jan 11, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 11, 2025CVE 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

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=6.4
  2. Affected versionversion=c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0 <1a0f54cb3fea5d087440b2bae03202c445156a8d
  3. Affected versionversion=c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0 <630d5d8f2bf6b340202b6bc2c05d794bbd8e4c1c
  4. Affected versionversion=c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0 <7296e5611adb2c619bd7bd3817ddde7ba865ef17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.4; version=c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0 <1a0f54cb3fea5d087440b2bae03202c445156a8d; version=c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0 <630d5d8f2bf6b340202b6bc2c05d794bbd8e4c1c; version=c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0 <7296e5611adb2c619bd7bd3817ddde7ba865ef17

Published CVSS scores

5.5CISA-ADPCVSS: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

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

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