CVE-2022-49031

Kernel data disclosure via unchecked channel index

Published Oct 21, 2024 · Updated May 11, 2026

An out-of-bounds read in the Linux AFE4403 IIO driver allows local users to disclose kernel data through a crafted sysfs read. The afe4403_read_raw function indexes the smaller afe4403_channel_leds array with chan->address before validating whether that channel has an LED entry. The path requires an SPI-attached AFE4403 device and local access; the demonstrated consequence is a four-byte read of adjacent kernel memory, with no documented write primitive or code execution.

CVSS severity7.1
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds read in the Linux AFE4403 IIO driver allows local users to disclose kernel data through a crafted sysfs read. The afe4403_read_raw function indexes the smaller afe4403_channel_leds array with chan->address before validating whether that channel has an LED entry. The path requires an SPI-attached AFE4403 device and local access; the demonstrated consequence is a four-byte read of adjacent kernel memory, with no documented write primitive or code execution.

The record

CVE
CVE-2022-49031
Published
Oct 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE 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=4.8
  2. Affected versionversion=b36e8257641a043764c62240316610c81e36376c <06c6ce21cec77dfa860d57e7a006000a57812efb
  3. Affected versionversion=b36e8257641a043764c62240316610c81e36376c <2d6a437064ffbe685c67ddb16dfc0946074c6c3f
  4. Affected versionversion=b36e8257641a043764c62240316610c81e36376c <58143c1ed5882c138a3cd2251a336fc8755f23d9
  5. Affected versionversion=b36e8257641a043764c62240316610c81e36376c <726fa3e4ab97dcff1c745bdc4fb137366cb8d3df
  6. Affected versionversion=b36e8257641a043764c62240316610c81e36376c <98afcb5f3be645d330c74c5194ba0d80e26f95e0
  7. Affected versionversion=b36e8257641a043764c62240316610c81e36376c <b1756af172fb80a3edc143772d49e166ec691b6c
  8. Affected versionversion=b36e8257641a043764c62240316610c81e36376c <c9268df36818ee4eaaaeadc80009b442a5ca69c9
  9. Affected versionversion=b36e8257641a043764c62240316610c81e36376c <e7e76a77aabef8989cbc0a8417af1aa040620867

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.8; version=b36e8257641a043764c62240316610c81e36376c <06c6ce21cec77dfa860d57e7a006000a57812efb; version=b36e8257641a043764c62240316610c81e36376c <2d6a437064ffbe685c67ddb16dfc0946074c6c3f; version=b36e8257641a043764c62240316610c81e36376c <58143c1ed5882c138a3cd2251a336fc8755f23d9; version=b36e8257641a043764c62240316610c81e36376c <726fa3e4ab97dcff1c745bdc4fb137366cb8d3df; version=b36e8257641a043764c62240316610c81e36376c <98afcb5f3be645d330c74c5194ba0d80e26f95e0; version=b36e8257641a043764c62240316610c81e36376c <b1756af172fb80a3edc143772d49e166ec691b6c; version=b36e8257641a043764c62240316610c81e36376c <c9268df36818ee4eaaaeadc80009b442a5ca69c9; version=b36e8257641a043764c62240316610c81e36376c <e7e76a77aabef8989cbc0a8417af1aa040620867

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
7.1UbuntuCVSS: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
T1005Data from Local System

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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