CVE-2024-42122: drm/amd/display: Add NULL pointer check for kzalloc
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Add NULL pointer check for kzalloc
[Why & How]
Check return pointer of kzalloc before using it.
Security readout for executives and security teams
Plain-English summary
CVE-2024-42122 is a Linux kernel AMD display driver issue where code used memory allocation results without first confirming allocation succeeded. The public record does not provide CVSS, CWE, or confirmed impact. Treat it as a kernel stability risk until vendor guidance clarifies business impact.
Executive priority
Do not treat this as emergency internet-exploitation exposure based on current evidence. Handle through normal kernel patch governance, with higher priority for Linux endpoints or servers using AMD display hardware where downtime from kernel faults would be costly.
Technical view
The vulnerability is in drm/amd/display and is resolved by adding a NULL pointer check after kzalloc. If allocation fails and the pointer is used, the likely failure mode is a kernel fault, but the sources do not state exploitability or impact. Stable kernel commits are referenced as fixes.
Likely exposure
Exposure is most relevant to Linux systems running affected kernel builds with AMD display DRM code present or enabled. The source bundle lists Linux kernel versions including 4.15, 6.1.129, 6.6.64, 6.9.9, and 6.10 as affected context.
Exploitation context
No active exploitation is reported in the supplied sources, and KEV status is false. The bundle provides no exploit details, proof of concept, attack prerequisites, or remote/local trigger conditions.
Researcher notes
Evidence is sparse. The record identifies an unchecked kzalloc return in drm/amd/display and stable commits adding a NULL check. There is no CVSS, CWE, attack vector, affected configuration detail, or confirmed impact in the provided bundle.
Mitigation direction
Update affected Linux kernels using vendor or distribution security updates.
Prioritize systems using AMD GPUs or AMD display driver paths.
Review referenced stable kernel commits for fixed build identification.
Check Debian LTS and other distribution advisories for packaged fixes.
Track vendor guidance because no CVSS or workaround is supplied.
Validation and detection
Inventory Linux kernel versions across AMD graphics-capable systems.
Confirm whether drm/amd/display code is present in deployed kernels.
Compare installed kernels against vendor fixed package versions.
Verify patch status against the referenced Linux stable commits.
Check vulnerability scanners for CVE-2024-42122 detection updates.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2024-42122 mapping review
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