CVE-2024-35942 Information

Description

In the Linux kernel the following vulnerability has been resolved:

pmdomain: imx8mp-blk-ctrl: imx8mp_blk: Add fdcc clock to hdmimix domain

According to i.MX8MP RM and HDMI ADD the fdcc clock is part of hdmi rx verification IP that should not enable for HDMI TX. But actually if the clock is disabled before HDMI/LCDIF probe LCDIF will not get pixel clock from HDMI PHY and print the error logs:

[CRTC:39:crtc-2] vblank wait timed out WARNING: CPU: 2 PID: 9 at drivers/gpu/drm/drm_atomic_helper.c:1634 drm_atomic_helper_wait_for_vblanks.part.0+0x23c/0x260

Add fdcc clock to LCDIF and HDMI TX power domains to fix the issue.

Reference

https://git.kernel.org/stable/c/9d3f959b426635c4da50dfc7b1306afd84d23e7c https://git.kernel.org/stable/c/b13c0d871cd878ff53d25507ca535f59ed1f6a2a https://git.kernel.org/stable/c/697624ee8ad557ab5417f985d2c804241a7ad30d