CVE-2022-49962

Kernel crash via missing shared xHCI root hub

Published Jun 18, 2025 · Updated May 11, 2026

NULL pointer dereference in Linux kernel 5.19 through 5.19.7 allows local users to crash the system during a controller reboot. The xHCI platform driver's remove path unconditionally removes and releases both host-controller structures when the shared root hub does not exist. Reachability requires an xHCI controller with only one root hub and execution of the reboot removal path, producing an availability-only kernel crash.

CVSS severity5.5
Medium
EPSS probability0.19%
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 5.19 through 5.19.7 allows local users to crash the system during a controller reboot. The xHCI platform driver's remove path unconditionally removes and releases both host-controller structures when the shared root hub does not exist. Reachability requires an xHCI controller with only one root hub and execution of the reboot removal path, producing an availability-only kernel crash.

The record

CVE
CVE-2022-49962
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 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=5.19
  2. Affected versionversion=e0fe986972f5b6b12086c73569206dd29c520be9 <4a593a62a9e3a25ab4bc37f612e4edec144f7f43
  3. Affected versionversion=e0fe986972f5b6b12086c73569206dd29c520be9 <7081b2f34ff291ada012bd6abacaf7d51c4cf73f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.19; version=e0fe986972f5b6b12086c73569206dd29c520be9 <4a593a62a9e3a25ab4bc37f612e4edec144f7f43; version=e0fe986972f5b6b12086c73569206dd29c520be9 <7081b2f34ff291ada012bd6abacaf7d51c4cf73f

Published CVSS scores

5.5NVDCVSS: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference

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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