CVE-2024-49923

Local service interruption via display-pipeline null dereference

Published Oct 21, 2024 · Updated May 11, 2026

NULL pointer dereference in AMD display code in affected Linux kernels allows local users to crash the kernel during pipe validation. Callers pass a null merge argument to dcn20_validate_apply_pipe_split_flags even though the function dereferences that pointer. A local low-privileged user must reach the AMD display pipeline; the bounded consequence is a kernel crash and service interruption.

CVSS severity5.5
Medium
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

NULL pointer dereference in AMD display code in affected Linux kernels allows local users to crash the kernel during pipe validation. Callers pass a null merge argument to dcn20_validate_apply_pipe_split_flags even though the function dereferences that pointer. A local low-privileged user must reach the AMD display pipeline; the bounded consequence is a kernel crash and service interruption.

The record

CVE
CVE-2024-49923
Published
Oct 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 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=4.15
  2. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <39a580cd15397e102aaec25986ae5acf492f8930
  3. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <5559598742fb4538e4c51c48ef70563c49c2af23
  4. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <85aa996ecfaa95d1e922867390502d23ce21b905
  5. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <9a05270869f40c89f8d184fe2d37cb86e0d7e5f5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <39a580cd15397e102aaec25986ae5acf492f8930; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <5559598742fb4538e4c51c48ef70563c49c2af23; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <85aa996ecfaa95d1e922867390502d23ce21b905; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <9a05270869f40c89f8d184fe2d37cb86e0d7e5f5

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.

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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-476NULL Pointer Dereference
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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