CVE-2022-49507

Kernel crash via uninitialized DA9121 regmap

Published Feb 26, 2025 · Updated May 11, 2026

Use of an uninitialized resource in the Linux kernel allows local users to crash the kernel during DA9121 device probing. An invalid device tree leaves chip->subvariant_id set to -EINVAL, and da9121_assign_chip_model() then accesses an uninitialized regmap configuration during probe. Reachability requires local low-privileged access and a DA9121 device probed through its I2C ID with an invalid device tree; the bounded consequence is an availability-only kernel crash.

CVSS severity5.5
Medium
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

Use of an uninitialized resource in the Linux kernel allows local users to crash the kernel during DA9121 device probing. An invalid device tree leaves chip->subvariant_id set to -EINVAL, and da9121_assign_chip_model() then accesses an uninitialized regmap configuration during probe. Reachability requires local low-privileged access and a DA9121 device probed through its I2C ID with an invalid device tree; the bounded consequence is an availability-only kernel crash.

The record

CVE
CVE-2022-49507
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-908, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 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=5.11
  2. Affected versionversion=f3fbd5566f6a8cdb7c48ab29bd1096205b7fbcaf <60f21eda69f1b5727a97d2077da766eb27fcc21f
  3. Affected versionversion=f3fbd5566f6a8cdb7c48ab29bd1096205b7fbcaf <7da64c7c82c9b29b628a62c88a8c2fb06990563d
  4. Affected versionversion=f3fbd5566f6a8cdb7c48ab29bd1096205b7fbcaf <bab76514aca36bc513224525d5598da676938218
  5. Affected versionversion=f3fbd5566f6a8cdb7c48ab29bd1096205b7fbcaf <be96baa0c79588084e0d7a4fa21c574cec9a57f4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.11; version=f3fbd5566f6a8cdb7c48ab29bd1096205b7fbcaf <60f21eda69f1b5727a97d2077da766eb27fcc21f; version=f3fbd5566f6a8cdb7c48ab29bd1096205b7fbcaf <7da64c7c82c9b29b628a62c88a8c2fb06990563d; version=f3fbd5566f6a8cdb7c48ab29bd1096205b7fbcaf <bab76514aca36bc513224525d5598da676938218; version=f3fbd5566f6a8cdb7c48ab29bd1096205b7fbcaf <be96baa0c79588084e0d7a4fa21c574cec9a57f4

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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 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-908Use of Uninitialized Resource
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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