PT-2025-49666 · Linux+2 · Linux Kernel+2

Published 2025-12-09 · Updated 2026-05-26 · CVE-2023-53806

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux Kernel (affected versions not specified)

Description A flaw exists in the Linux kernel's AMD display driver related to how subviewport command information is populated. Specifically, the driver incorrectly populates this information for both pipes using vblank, leading to an out-of-bounds array access and a subsequent page fault. This issue can cause system restarts, particularly when changing the display resolution to 8k with extended mode.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Related Identifiers

CVE-2023-53806

RHSA-2024:2394

SUSE-SU-2026:0263-1

SUSE-SU-2026:0317-1

Affected Products

Amd Display Driver

Debian

Linux Kernel

References · 856

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53806.json · Exploit
• https://osv.dev/vulnerability/CVE-2023-53806 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53806 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0317-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53806 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53806 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2023-53806 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53806 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53806 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:0263-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53806 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2023-53806 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53806 · Security Note
• https://bugzilla.suse.com/1255760 · Note
• https://bugzilla.suse.com/1256204 · Note