CVE-2024-35942: linux kernel — Fix

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.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.19 — 6.6.27
linux	linux_kernel	6.7 — 6.8.6

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2024-35942? +

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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-35942? +

CVE-2024-35942 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-35942? +

CVE-2024-35942 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-35942? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-35942