CVE-2026-53330 Linux CVE debrief

Who should care

Users of Linux kernel with drm/amd/display component, Linux kernel maintainers, amd/display developers, and security teams responsible for vulnerability management should be aware of this vulnerability and take necessary actions. This includes reviewing and applying patches or mitigations, restricting access to the drm/amd/display component, and monitoring for suspicious activity.

Technical summary

The aux_rd_interval array in struct dc_lttpr_caps is declared with MAX_REPEATER_CNT - 1 (7) elements. However, the offset parameter passed to dp_get_eq_aux_rd_interval() can be as large as MAX_REPEATER_CNT (8). This leads to an out-of-bounds read of aux_rd_interval[7] when offset is 8. The fix involves growing aux_rd_interval to MAX_REPEATER_CNT elements. This change ensures that the array can accommodate the full range of valid repeater counts defined by the DP spec.

Defensive priority

Medium

Recommended defensive actions

• Update Linux kernel to the latest version
• Restrict access to the drm/amd/display component
• Monitor for suspicious activity
• Review compensating controls for exposed systems
• Check relevant monitoring, detection, and logs for exposed assets
• Track exceptions and retest remediated assets
• Perform thorough vulnerability assessment and penetration testing

Evidence notes

The CVE record was published on 2026-07-01T14:16:40.893Z and was last modified on 2026-07-10T12:17:22.633Z. The Linux kernel vulnerability affects the drm/amd/display component. Evidence is limited to public CVE and NVD details. Defenders should verify affected deployments, review official advisories, and monitor for suspicious activity. Additional verification tasks include checking relevant monitoring, detection, and logs for exposed assets, and tracking exceptions and retesting remediated assets.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.