CVE-2022-47521

Kernel memory corruption via undersized channel list

Published Dec 18, 2022 · Updated Apr 17, 2025

Heap-based buffer overflow in the Linux kernel before 6.0.11 allows local users to corrupt memory via crafted Wi-Fi management frames. The WILC1000 driver's wilc_wfi_cfg_parse_ch_attr function accepts an IEEE80211_P2P_ATTR_CHANNEL_LIST shorter than struct wilc_attr_ch_list and records its offset, enabling a later out-of-bounds write. Triggering requires the WILC1000 wireless driver to parse the crafted frame; published evidence establishes kernel-heap corruption but not code execution.

CVSS severity7.8
High
EPSS probability0.34%
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

Heap-based buffer overflow in the Linux kernel before 6.0.11 allows local users to corrupt memory via crafted Wi-Fi management frames. The WILC1000 driver's wilc_wfi_cfg_parse_ch_attr function accepts an IEEE80211_P2P_ATTR_CHANNEL_LIST shorter than struct wilc_attr_ch_list and records its offset, enabling a later out-of-bounds write. Triggering requires the WILC1000 wireless driver to parse the crafted frame; published evidence establishes kernel-heap corruption but not code execution.

The record

CVE
CVE-2022-47521
Published
Dec 18, 2022
Updated
Apr 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 2025Record 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

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