CVE-2022-48698

Kernel memory leak via unreleased debugfs dentry

Published May 3, 2024 · Updated May 11, 2026

Memory leak in AMD display debugfs code in Linux allows attackers to consume kernel memory over time via unspecified vectors. The crtc_debugfs_init function retains the dentry reference returned by debugfs_lookup without calling dput, leaving kernel memory pinned after initialization. The path requires AMD Secure Display support and display-controller initialization; published sources identify no remote trigger or resulting crash.

CVSS severity5.3
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 AMD display debugfs code in Linux allows attackers to consume kernel memory over time via unspecified vectors. The crtc_debugfs_init function retains the dentry reference returned by debugfs_lookup without calling dput, leaving kernel memory pinned after initialization. The path requires AMD Secure Display support and display-controller initialization; published sources identify no remote trigger or resulting crash.

The record

CVE
CVE-2022-48698
Published
May 3, 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. May 3, 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=5.13
  2. Affected versionversion=86bc221918925a0bbb49043e3936e898e009b43b <3a6279d243cb035eaaff1450980b40cf19748f05
  3. Affected versionversion=86bc221918925a0bbb49043e3936e898e009b43b <58acd2ebae034db3bacf38708f508fbd12ae2e54
  4. Affected versionversion=86bc221918925a0bbb49043e3936e898e009b43b <cbfac7fa491651c57926c99edeb7495c6c1aeac2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=86bc221918925a0bbb49043e3936e898e009b43b <3a6279d243cb035eaaff1450980b40cf19748f05; version=86bc221918925a0bbb49043e3936e898e009b43b <58acd2ebae034db3bacf38708f508fbd12ae2e54; version=86bc221918925a0bbb49043e3936e898e009b43b <cbfac7fa491651c57926c99edeb7495c6c1aeac2

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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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