CVE-2022-49848

Kernel crash via NULL PCS_USB runtime-resume base

Published May 1, 2025 · Updated May 11, 2026

NULL pointer dereference in the QMP combo PHY driver in Linux 6.0 through 6.0.8 allows local users to crash the kernel during runtime resume. The runtime-resume path derives the PCS_USB register base from a separate mapping even when platform data supplies no PCS_USB offset, leaving the base NULL. The condition is limited to platforms such as Qualcomm SC7180 that omit that offset, and triggering it interrupts the host through a kernel oops or panic.

CVSS severity5.5
Medium
EPSS probability0.16%
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 the QMP combo PHY driver in Linux 6.0 through 6.0.8 allows local users to crash the kernel during runtime resume. The runtime-resume path derives the PCS_USB register base from a separate mapping even when platform data supplies no PCS_USB offset, leaving the base NULL. The condition is limited to platforms such as Qualcomm SC7180 that omit that offset, and triggering it interrupts the host through a kernel oops or panic.

The record

CVE
CVE-2022-49848
Published
May 1, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 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=6.0
  2. Affected versionversion=fc64623637da5e964566628bc0e660e93dc7a395 <04948e757148f870a31f4887ea2239403f516c3c
  3. Affected versionversion=fc64623637da5e964566628bc0e660e93dc7a395 <c559a8b5cfa3db196ced0257b288f17027621348

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.0; version=fc64623637da5e964566628bc0e660e93dc7a395 <04948e757148f870a31f4887ea2239403f516c3c; version=fc64623637da5e964566628bc0e660e93dc7a395 <c559a8b5cfa3db196ced0257b288f17027621348

Published CVSS scores

5.5CISA ADPCVSS: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.

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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
T1499Endpoint Denial of Service

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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