CVE-2024-26779

Kernel crash via premature fast-xmit enablement

Published Apr 3, 2024 · Updated Aug 5, 2026

Race condition in Linux kernel mac80211 allows attackers to crash the kernel during concurrent wireless station setup. mac80211 enables fast-xmit before confirming that a station is uploaded, so drv_tx can receive a station whose drv_priv data is uninitialized. Triggering the crash requires the affected mac80211 path and a race during station insertion; published assessments disagree on whether access is adjacent or local.

CVSS severity8.8
High
EPSS probability0.28%
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 Linux kernel mac80211 allows attackers to crash the kernel during concurrent wireless station setup. mac80211 enables fast-xmit before confirming that a station is uploaded, so drv_tx can receive a station whose drv_priv data is uninitialized. Triggering the crash requires the affected mac80211 path and a race during station insertion; published assessments disagree on whether access is adjacent or local.

The record

CVE
CVE-2024-26779
Published
Apr 3, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 3, 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=17c18bf880b2464851e5a2bca86521affc46c97e <281280276b70c822f55ce15b661f6d1d3228aaa9
  2. Affected versionversion=17c18bf880b2464851e5a2bca86521affc46c97e <54b79d8786964e2f840e8a2ec4a9f9a50f3d4954
  3. Affected versionversion=17c18bf880b2464851e5a2bca86521affc46c97e <5ffab99e070b9f8ae0cf60c3c3602b84eee818dd
  4. Affected versionversion=17c18bf880b2464851e5a2bca86521affc46c97e <76fad1174a0cae6fc857b9f88b261a2e4f07d587
  5. Affected versionversion=17c18bf880b2464851e5a2bca86521affc46c97e <85720b69aef177318f4a18efbcc4302228a340e5
  6. Affected versionversion=17c18bf880b2464851e5a2bca86521affc46c97e <88c18fd06608b3adee547102505d715f21075c9d
  7. Affected versionversion=17c18bf880b2464851e5a2bca86521affc46c97e <bcbc84af1183c8cf3d1ca9b78540c2185cd85e7f
  8. Affected versionversion=17c18bf880b2464851e5a2bca86521affc46c97e <eb39bb548bf974acad7bd6780fe11f9e6652d696
  9. Affected versionversion=4.2

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=17c18bf880b2464851e5a2bca86521affc46c97e <281280276b70c822f55ce15b661f6d1d3228aaa9; version=17c18bf880b2464851e5a2bca86521affc46c97e <54b79d8786964e2f840e8a2ec4a9f9a50f3d4954; version=17c18bf880b2464851e5a2bca86521affc46c97e <5ffab99e070b9f8ae0cf60c3c3602b84eee818dd; version=17c18bf880b2464851e5a2bca86521affc46c97e <76fad1174a0cae6fc857b9f88b261a2e4f07d587; version=17c18bf880b2464851e5a2bca86521affc46c97e <85720b69aef177318f4a18efbcc4302228a340e5; version=17c18bf880b2464851e5a2bca86521affc46c97e <88c18fd06608b3adee547102505d715f21075c9d; version=17c18bf880b2464851e5a2bca86521affc46c97e <bcbc84af1183c8cf3d1ca9b78540c2185cd85e7f; version=17c18bf880b2464851e5a2bca86521affc46c97e <eb39bb548bf974acad7bd6780fe11f9e6652d696; version=4.2

Published CVSS scores

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

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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

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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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