CVE-2022-49792

Kernel memory disclosure and crash via unterminated map

Published May 1, 2025 · Updated Aug 5, 2026

Out-of-bounds read in the MP2629 ADC driver in Linux allows local users to expose kernel memory or crash the system during device probing. The mp2629_adc_maps array lacks the empty sentinel required by iio_map_array_register, so registration walks beyond the array and adds mappings derived from unrelated kernel data. The path requires an on-board MP2629 I2C device and runs at boot or during local module loading or sysfs binding; later consumer lookup can dereference a bogus mapping and panic the kernel.

CVSS severity7.1
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the MP2629 ADC driver in Linux allows local users to expose kernel memory or crash the system during device probing. The mp2629_adc_maps array lacks the empty sentinel required by iio_map_array_register, so registration walks beyond the array and adds mappings derived from unrelated kernel data. The path requires an on-board MP2629 I2C device and runs at boot or during local module loading or sysfs binding; later consumer lookup can dereference a bogus mapping and panic the kernel.

The record

CVE
CVE-2022-49792
Published
May 1, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.8
  2. Affected versionversion=7abd9fb6468225f5c7f83149ce279cc1a912a68a <1678d4abb2dc2ca3b05b998a9d88616976e4f947
  3. Affected versionversion=7abd9fb6468225f5c7f83149ce279cc1a912a68a <399b2105a2240e730b9f3880bd8f154247539aa7
  4. Affected versionversion=7abd9fb6468225f5c7f83149ce279cc1a912a68a <ca1547ab15f48dc81624183ae17a2fd1bad06dfc
  5. Affected versionversion=7abd9fb6468225f5c7f83149ce279cc1a912a68a <d95b85c5084ad70011988861ee864529eefa1da0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.8; version=7abd9fb6468225f5c7f83149ce279cc1a912a68a <1678d4abb2dc2ca3b05b998a9d88616976e4f947; version=7abd9fb6468225f5c7f83149ce279cc1a912a68a <399b2105a2240e730b9f3880bd8f154247539aa7; version=7abd9fb6468225f5c7f83149ce279cc1a912a68a <ca1547ab15f48dc81624183ae17a2fd1bad06dfc; version=7abd9fb6468225f5c7f83149ce279cc1a912a68a <d95b85c5084ad70011988861ee864529eefa1da0

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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-125Out-of-bounds Read

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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