CVE-2024-49939

Kernel panic via duplicate rtw89 interface insertion

Published Oct 21, 2024 · Updated Aug 5, 2026

Denial of service in the rtw89 driver in Linux allows physically proximate attackers to trigger a kernel panic through crafted Wi-Fi frames. rtw89_ops_add_interface inserts an already-linked rtwvif into rtwvifs_list when rtw89_wow_resume fails after SER L2 during WoWLAN resume. Wi-Fi radio proximity and a susceptible rtw89 device are required; the corrupted list crashes hardened kernels and can lock other builds.

CVSS severity8.8
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the rtw89 driver in Linux allows physically proximate attackers to trigger a kernel panic through crafted Wi-Fi frames. rtw89_ops_add_interface inserts an already-linked rtwvif into rtwvifs_list when rtw89_wow_resume fails after SER L2 during WoWLAN resume. Wi-Fi radio proximity and a susceptible rtw89 device are required; the corrupted list crashes hardened kernels and can lock other builds.

The record

CVE
CVE-2024-49939
Published
Oct 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE 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

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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=5.16
  2. Affected versionversion=e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd <37c319503023de49a4c87301c8998c8d928112cb
  3. Affected versionversion=e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd <490eddc836b2a6ec286e5df14bed4c7cf5e1f475
  4. Affected versionversion=e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd <7dd5d2514a8ea58f12096e888b0bd050d7eae20a
  5. Affected versionversion=e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd <b04650b5a9990cf5c0de480e62c68199f1396a04
  6. Affected versionversion=e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd <fdc73f2cfbe897f4733156df211d79ced649b23c

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.16; version=e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd <37c319503023de49a4c87301c8998c8d928112cb; version=e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd <490eddc836b2a6ec286e5df14bed4c7cf5e1f475; version=e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd <7dd5d2514a8ea58f12096e888b0bd050d7eae20a; version=e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd <b04650b5a9990cf5c0de480e62c68199f1396a04; version=e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd <fdc73f2cfbe897f4733156df211d79ced649b23c

Published CVSS scores

8.8Linux kernel CNACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.5NIST NVDCVSS: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.

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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

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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