CVE-2025-38467: Debian Linux

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: drm/exynos: exynos7_drm_decon: add vblank check in IRQ handling If there's support for another console device (such as a TTY serial), the kernel occasionally panics during boot. The panic message and a relevant snippet of the call stack is as follows: Unable to handle kernel NULL pointer dereference at virtual address 000000000000000 Call trace: drm_crtc_handle_vblank+0x10/0x30 (P) decon_irq_handler+0x88/0xb4 [...] Otherwise, the panics don't happen. This indicates that it's some sort of race condition. Add a check to validate if the drm device can handle vblanks before calling drm_crtc_handle_vblank() to avoid this.

Affected products

• Debian Debian Linux: version 11.0 only
• Linux Linux Kernel: from 4.0, before 5.4.296 (fixed in 5.4.296); from 5.5, before 5.10.240 (fixed in 5.10.240); from 5.11, before 5.15.189 (fixed in 5.15.189); from 5.16, before 6.1.146 (fixed in 6.1.146); from 6.2, before 6.6.99 (fixed in 6.6.99); from 6.7, before 6.12.39 (fixed in 6.12.39); …

Published 2025-07-25. Last modified 2026-06-17.