CVE-2022-50678

Service interruption via altered brcmfmac request index

Published Dec 9, 2025 · Updated May 11, 2026

Denial of service in affected Linux kernel versions starting with 4.13 allows local users to trigger a kernel Oops during a Wi-Fi scan. With SCAN logging enabled, brcmf_pno_config_sched_scans changes the loop index while setting a random MAC address, then reads the request array at that altered index. Reachability requires the brcmfmac driver, scheduled scanning, and SCAN-level logging; the documented null-address fault interrupts the host.

CVSS severityUnavailable
Unscored
EPSS probability0.26%
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 affected Linux kernel versions starting with 4.13 allows local users to trigger a kernel Oops during a Wi-Fi scan. With SCAN logging enabled, brcmf_pno_config_sched_scans changes the loop index while setting a random MAC address, then reads the request array at that altered index. Reachability requires the brcmfmac driver, scheduled scanning, and SCAN-level logging; the documented null-address fault interrupts the host.

The record

CVE
CVE-2022-50678
Published
Dec 9, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 9, 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

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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=4.13
  2. Affected versionversion=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <1c12d47a9017a7745585b57b9b0fdc0d8c50978e
  3. Affected versionversion=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <4d4dcfa6b4e85a878401f4fbae4cafc88cdcceb4
  4. Affected versionversion=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <50e45034c5802cedbf5b707364ea76ace29ad984
  5. Affected versionversion=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <56a0ac48634155d2b866b99fba7e1dd8df4e2804
  6. Affected versionversion=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <75995ce1c926ee87bf93d58977c766b4e7744715
  7. Affected versionversion=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <7ccb0529446ae68a8581916bfc95c353306d76ba
  8. Affected versionversion=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <826405a911473b6ee8bd2aa891cb2f03a13efa17
  9. Affected versionversion=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <aa666b68e73fc06d83c070d96180b9010cf5a960

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=4.13; version=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <1c12d47a9017a7745585b57b9b0fdc0d8c50978e; version=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <4d4dcfa6b4e85a878401f4fbae4cafc88cdcceb4; version=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <50e45034c5802cedbf5b707364ea76ace29ad984; version=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <56a0ac48634155d2b866b99fba7e1dd8df4e2804; version=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <75995ce1c926ee87bf93d58977c766b4e7744715; version=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <7ccb0529446ae68a8581916bfc95c353306d76ba; version=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <826405a911473b6ee8bd2aa891cb2f03a13efa17; version=efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3 <aa666b68e73fc06d83c070d96180b9010cf5a960

Published CVSS scores

No CVSS assessment is available in this record.

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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation Flaws

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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