CVE-2022-48907

Kernel memory exhaustion via lcd2s teardown leak

Published Aug 22, 2024 · Updated May 11, 2026

Memory leak in the Linux kernel lcd2s driver allows local users to exhaust memory by repeatedly cycling an LCD2S device. The lcd2s remove path leaves its kzalloc-allocated lcd2s_data structure allocated after device teardown because no matching free operation runs. Triggering the leak requires local access to cycle the affected I2C driver device lifecycle; repeated cycles can interrupt service through memory exhaustion.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the Linux kernel lcd2s driver allows local users to exhaust memory by repeatedly cycling an LCD2S device. The lcd2s remove path leaves its kzalloc-allocated lcd2s_data structure allocated after device teardown because no matching free operation runs. Triggering the leak requires local access to cycle the affected I2C driver device lifecycle; repeated cycles can interrupt service through memory exhaustion.

The record

CVE
CVE-2022-48907
Published
Aug 22, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 22, 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

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=5.11
  2. Affected versionversion=8c9108d014c5bd0f0da2e3544eb45dc56a6da92b <3585ed5f9b11a6094dd991d76a1541e5d03b986a
  3. Affected versionversion=8c9108d014c5bd0f0da2e3544eb45dc56a6da92b <5d53cd33f4253aa4cf02bf7e670b3c6a99674351
  4. Affected versionversion=8c9108d014c5bd0f0da2e3544eb45dc56a6da92b <898c0a15425a5bcaa8d44bd436eae5afd2483796

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.11; version=8c9108d014c5bd0f0da2e3544eb45dc56a6da92b <3585ed5f9b11a6094dd991d76a1541e5d03b986a; version=8c9108d014c5bd0f0da2e3544eb45dc56a6da92b <5d53cd33f4253aa4cf02bf7e670b3c6a99674351; version=8c9108d014c5bd0f0da2e3544eb45dc56a6da92b <898c0a15425a5bcaa8d44bd436eae5afd2483796

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CanonicalCVSS: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.

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-401Missing Release of Memory after Effective Lifetime

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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