CVE-2026-53330 drm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval()
An out-of-bounds read in the AMD display driver allows attackers to disclose memory or cause a denial of service via crafted DP repeater counts.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-53330?
CVE-2026-53330 is a high-severity memory corruption vulnerability in Linux kernel, published on 1 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval()
[Why & How] The aux_rd_interval array in struct dc_lttpr_caps is declared with MAX_REPEATER_CNT - 1 (7) elements, indexed 0..6. However, the offset parameter passed to dp_get_eq_aux_rd_interval() can be as large as MAX_REPEATER_CNT (8) when a sink reports 8 LTTPR repeaters via DPCD. This leads to an out-of-bounds read of aux_rd_interval[7] when offset is 8.
Fix this by growing aux_rd_interval to MAX_REPEATER_CNT elements to accommodate the full range of valid repeater counts defined by the DP spec.
(cherry picked from commit a55a458a8df37a65ffda5cf721d554a8f74f6b04)
Weakness: CWE-125
Which versions are affected by CVE-2026-53330?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-53330?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-53330 being exploited?
There is no known exploitation of CVE-2026-53330 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-91620, BELL-CVE-2026-53330, DEBIAN-CVE-2026-53330, GHSA-x86r-325j-5wq6, ROOT-OS-DEBIAN-11-CVE-2026-53330, ROOT-OS-DEBIAN-12-CVE-2026-53330 and 4 more.