CVE-2022-49218

Kernel memory disclosure via Post Cursor2 overread

Published Feb 26, 2025 · Updated May 11, 2026

Out-of-bounds read in Linux kernel DRM DisplayPort code in 5.5 through 5.17.1 allows local users to read kernel memory. drm_dp_get_adjust_request_post_cursor indexes a six-byte link_status array at the Post Cursor2 register offset, reaching index 10. Low-privileged local access is required; the read can expose kernel data or crash the system, without integrity impact.

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

Out-of-bounds read in Linux kernel DRM DisplayPort code in 5.5 through 5.17.1 allows local users to read kernel memory. drm_dp_get_adjust_request_post_cursor indexes a six-byte link_status array at the Post Cursor2 register offset, reaching index 10. Low-privileged local access is required; the read can expose kernel data or crash the system, without integrity impact.

The record

CVE
CVE-2022-49218
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, CAPEC-540, T1005
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=5.5
  2. Affected versionversion=79465e0ffeb9e4866939ea562bc55367be91e595 <a2151490cc6c57b368d7974ffd447a8b36ade639
  3. Affected versionversion=79465e0ffeb9e4866939ea562bc55367be91e595 <aeaed9a9fe694f8b1462fb81e2d33298c929180b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.5; version=79465e0ffeb9e4866939ea562bc55367be91e595 <a2151490cc6c57b368d7974ffd447a8b36ade639; version=79465e0ffeb9e4866939ea562bc55367be91e595 <aeaed9a9fe694f8b1462fb81e2d33298c929180b

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
7.1CISA-ADPCVSS: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.

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-125Out-of-bounds Read
CAPEC-540Overread Buffers
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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