CVE-2022-49508

Kernel memory corruption via ELAN input double free

Published Feb 26, 2025 · Updated May 11, 2026

Double free in the ELAN HID driver in Linux 4.17 through 5.18.2 allows local users to corrupt kernel memory during device configuration. elan_input_configured explicitly frees a managed input device on an error path even though device-managed cleanup frees it again. Reachability requires the ELAN touchpad driver and a device-configuration error; public records do not document a reliable path from the corruption to a specific outcome.

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

What happened

Double free in the ELAN HID driver in Linux 4.17 through 5.18.2 allows local users to corrupt kernel memory during device configuration. elan_input_configured explicitly frees a managed input device on an error path even though device-managed cleanup frees it again. Reachability requires the ELAN touchpad driver and a device-configuration error; public records do not document a reliable path from the corruption to a specific outcome.

The record

CVE
CVE-2022-49508
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-415
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=4.17
  2. Affected versionversion=9a6a4193d65b853020ef0e66cecdf9e64a863883 <1af20714fedad238362571620be0bd690ded05b6
  3. Affected versionversion=9a6a4193d65b853020ef0e66cecdf9e64a863883 <24f9dfdaece9bd75bb8dbfdba83eddeefdf7dc47
  4. Affected versionversion=9a6a4193d65b853020ef0e66cecdf9e64a863883 <5291451851feeb66fd4bf0826710f482f3b1ab38
  5. Affected versionversion=9a6a4193d65b853020ef0e66cecdf9e64a863883 <6d0726725c7c560495f5ff364862a2cefea542e3
  6. Affected versionversion=9a6a4193d65b853020ef0e66cecdf9e64a863883 <8bb1716507ebf12d50bbf181764481de3b6bc7fd
  7. Affected versionversion=9a6a4193d65b853020ef0e66cecdf9e64a863883 <c92ec22a991778a096342cf1a917ae36c5c86a90
  8. Affected versionversion=9a6a4193d65b853020ef0e66cecdf9e64a863883 <f1d4f19a796551edc6679a681ea1756b8c578c08

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.17; version=9a6a4193d65b853020ef0e66cecdf9e64a863883 <1af20714fedad238362571620be0bd690ded05b6; version=9a6a4193d65b853020ef0e66cecdf9e64a863883 <24f9dfdaece9bd75bb8dbfdba83eddeefdf7dc47; version=9a6a4193d65b853020ef0e66cecdf9e64a863883 <5291451851feeb66fd4bf0826710f482f3b1ab38; version=9a6a4193d65b853020ef0e66cecdf9e64a863883 <6d0726725c7c560495f5ff364862a2cefea542e3; version=9a6a4193d65b853020ef0e66cecdf9e64a863883 <8bb1716507ebf12d50bbf181764481de3b6bc7fd; version=9a6a4193d65b853020ef0e66cecdf9e64a863883 <c92ec22a991778a096342cf1a917ae36c5c86a90; version=9a6a4193d65b853020ef0e66cecdf9e64a863883 <f1d4f19a796551edc6679a681ea1756b8c578c08

Published CVSS scores

7.8Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.

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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-415Double Free

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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