CVE-2022-42722

System crash via absent P2P netdev pointer

Published Oct 13, 2022 · Updated Aug 3, 2024

NULL pointer dereference in Linux kernel 5.8 through 5.19.15 allows physically proximate attackers to crash systems via WLAN frames. The mac80211 beacon-protection failure path calls cfg80211 to report an undecryptable or malformed beacon using a netdev pointer that P2P devices do not have. Exploitation requires WLAN-frame injection within wireless range and beacon protection on a P2P device; the resulting kernel NULL dereference crashes the system.

CVSS severity5.5
Medium
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux kernel 5.8 through 5.19.15 allows physically proximate attackers to crash systems via WLAN frames. The mac80211 beacon-protection failure path calls cfg80211 to report an undecryptable or malformed beacon using a netdev pointer that P2P devices do not have. Exploitation requires WLAN-frame injection within wireless range and beacon protection on a P2P device; the resulting kernel NULL dereference crashes the system.

The record

CVE
CVE-2022-42722
Published
Oct 13, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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