CVE-2022-48979

Kernel memory corruption via undersized display array

Published Oct 21, 2024 · Updated Aug 12, 2026

Out-of-bounds array access in Linux 4.15 through 6.0.12 and 6.1 release candidates allows local users to corrupt kernel memory via DRM modesetting. DCN32 DML sizes LinkCapacitySupport for eight DPPs but indexes it across as many as 20 voltage states, reading and writing adjacent display-mode fields. Reachability requires affected DCN32 graphics hardware and DRM-master access for atomic modesetting; corruption can panic the host or compromise kernel state.

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

Out-of-bounds array access in Linux 4.15 through 6.0.12 and 6.1 release candidates allows local users to corrupt kernel memory via DRM modesetting. DCN32 DML sizes LinkCapacitySupport for eight DPPs but indexes it across as many as 20 voltage states, reading and writing adjacent display-mode fields. Reachability requires affected DCN32 graphics hardware and DRM-master access for atomic modesetting; corruption can panic the host or compromise kernel state.

The record

CVE
CVE-2022-48979
Published
Oct 21, 2024
Updated
Aug 12, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-129, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 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=5.14
  2. Affected versionversion=74458c081fcfb0423877e630de2746daefdb16e4 <3d8a298b2e83b98042e6ec726e934f535b23e6aa
  3. Affected versionversion=74458c081fcfb0423877e630de2746daefdb16e4 <aeffc8fb2174f017a10df114bc312f899904dc68

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.14; version=74458c081fcfb0423877e630de2746daefdb16e4 <3d8a298b2e83b98042e6ec726e934f535b23e6aa; version=74458c081fcfb0423877e630de2746daefdb16e4 <aeffc8fb2174f017a10df114bc312f899904dc68

Published CVSS scores

5.5NIST NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-129Improper Validation of Array Index
T1068Exploitation for Privilege Escalation

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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