CVE-2024-46808

Kernel crash via unchecked DPCD buffer allocation

Published Sep 27, 2024 · Updated May 11, 2026

NULL pointer dereference in Linux 4.15 through 6.10.8 allows local users to crash the kernel during AMD DisplayPort DPCD reads. The dpcd_extend_address_range function fails to reject a NULL result from kcalloc, and core_link_read_dpcd then indexes that buffer while partitioning the extended read. Exploitation requires local low-privileged access, affected AMD display code, and an allocation failure; the documented consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.20%
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 Linux 4.15 through 6.10.8 allows local users to crash the kernel during AMD DisplayPort DPCD reads. The dpcd_extend_address_range function fails to reject a NULL result from kcalloc, and core_link_read_dpcd then indexes that buffer while partitioning the extended read. Exploitation requires local low-privileged access, affected AMD display code, and an allocation failure; the documented consequence is a kernel crash.

The record

CVE
CVE-2024-46808
Published
Sep 27, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 27, 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 <5524fa301ba649f8cf00848f91468e0ba7e4f24c
  3. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <ca0b0b0a22306f2e51105ac48f4a09c2fbbb504e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <5524fa301ba649f8cf00848f91468e0ba7e4f24c; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <ca0b0b0a22306f2e51105ac48f4a09c2fbbb504e

Published CVSS scores

5.5NVDCVSS: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
T1499Endpoint Denial of Service

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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