CVE-2021-47471: Linux Kernel

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: mxsfb: Fix NULL pointer dereference crash on unload The mxsfb->crtc.funcs may already be NULL when unloading the driver, in which case calling mxsfb_irq_disable() via drm_irq_uninstall() from mxsfb_unload() leads to NULL pointer dereference. Since all we care about is masking the IRQ and mxsfb->base is still valid, just use that to clear and mask the IRQ.

Affected products

• Linux Linux Kernel: from 5.10, before 5.10.76 (fixed in 5.10.76); from 5.11, before 5.14.15 (fixed in 5.14.15); version 5.15 only

Published 2024-05-22. Last modified 2026-06-17.