CVE-2022-49524

Kernel use-after-free via unreleased I2C resources

Published Feb 26, 2025 · Updated May 11, 2026

Use-after-free in the cx23885 PCI media driver in affected Linux kernels allows local users to access freed memory during device initialization. When DMA-mask setup fails, cx23885_initdev follows an error path that leaves I2C resources initialized by cx23885_dev_setup, and later driver removal reads the stale object. Reachability requires local low-privileged access, a supported cx23885 PCI device, and a platform where DMA-mask setup fails; the documented result is an invalid eight-byte kernel-memory read.

CVSS severity7.8
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use-after-free in the cx23885 PCI media driver in affected Linux kernels allows local users to access freed memory during device initialization. When DMA-mask setup fails, cx23885_initdev follows an error path that leaves I2C resources initialized by cx23885_dev_setup, and later driver removal reads the stale object. Reachability requires local low-privileged access, a supported cx23885 PCI device, and a platform where DMA-mask setup fails; the documented result is an invalid eight-byte kernel-memory read.

The record

CVE
CVE-2022-49524
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1499.004
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2bc46b3ad3c15165f91459b07ff8682478683194 <453514a874c78df1e7804e6e3aaa60c8d8deb6a8
  2. Affected versionversion=2bc46b3ad3c15165f91459b07ff8682478683194 <6041d1a0365baa729b6adfb6ed5386d9388018db
  3. Affected versionversion=2bc46b3ad3c15165f91459b07ff8682478683194 <7b9978e1c94e569d65a0e7e719abb9340f5db4a0
  4. Affected versionversion=2bc46b3ad3c15165f91459b07ff8682478683194 <86bd6a579c6c60547706cabf299cd2c9feab3332
  5. Affected versionversion=2bc46b3ad3c15165f91459b07ff8682478683194 <98106f100f50c487469903b9cf6d966785fc9cc3
  6. Affected versionversion=2bc46b3ad3c15165f91459b07ff8682478683194 <ca17e7a532d1a55466cc007b3f4d319541a27493
  7. Affected versionversion=2bc46b3ad3c15165f91459b07ff8682478683194 <e8123311cf06d7dae71e8c5fe78e0510d20cd30b
  8. Affected versionversion=2bc46b3ad3c15165f91459b07ff8682478683194 <fa636e9ee4442215cd9a2e079cd5a8e1fe0cb8ba
  9. Affected versionversion=4.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2bc46b3ad3c15165f91459b07ff8682478683194 <453514a874c78df1e7804e6e3aaa60c8d8deb6a8; version=2bc46b3ad3c15165f91459b07ff8682478683194 <6041d1a0365baa729b6adfb6ed5386d9388018db; version=2bc46b3ad3c15165f91459b07ff8682478683194 <7b9978e1c94e569d65a0e7e719abb9340f5db4a0; version=2bc46b3ad3c15165f91459b07ff8682478683194 <86bd6a579c6c60547706cabf299cd2c9feab3332; version=2bc46b3ad3c15165f91459b07ff8682478683194 <98106f100f50c487469903b9cf6d966785fc9cc3; version=2bc46b3ad3c15165f91459b07ff8682478683194 <ca17e7a532d1a55466cc007b3f4d319541a27493; version=2bc46b3ad3c15165f91459b07ff8682478683194 <e8123311cf06d7dae71e8c5fe78e0510d20cd30b; version=2bc46b3ad3c15165f91459b07ff8682478683194 <fa636e9ee4442215cd9a2e079cd5a8e1fe0cb8ba; version=4.8

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 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-416Use After Free
T1499.004Application or System Exploitation DoS

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo