CVE-2024-36976 Revert "media: v4l2-ctrls: show all owned controls in log_status"

Medium 5.5 Published Updated

A potential deadlock in the Linux kernel's V4L2 control subsystem can cause a denial of service, requiring a patch to revert the problematic commit.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2024-36976?

CVE-2024-36976 is a medium-severity vulnerability in Linux kernel, published on 18 Jun 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

Revert "media: v4l2-ctrls: show all owned controls in log_status"

This reverts commit 9801b5b28c6929139d6fceeee8d739cc67bb2739.

This patch introduced a potential deadlock scenario:

[Wed May 8 10:02:06 2024] Possible unsafe locking scenario:

[Wed May 8 10:02:06 2024] CPU0 CPU1 [Wed May 8 10:02:06 2024] ---- ---- [Wed May 8 10:02:06 2024] lock(vivid_ctrls:1620:(hdl_vid_cap)->_lock); [Wed May 8 10:02:06 2024] lock(vivid_ctrls:1608:(hdl_user_vid)->_lock); [Wed May 8 10:02:06 2024] lock(vivid_ctrls:1620:(hdl_vid_cap)->_lock); [Wed May 8 10:02:06 2024] lock(vivid_ctrls:1608:(hdl_user_vid)->_lock);

For now just revert.

Weakness: CWE-667

Which versions are affected by CVE-2024-36976?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-36976?

Apply the vendor's patch.

Is CVE-2024-36976 being exploited?

There is no known exploitation of CVE-2024-36976 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as BELL-CVE-2024-36976, GHSA-8pf7-jhff-4vgr, UBUNTU-CVE-2024-36976.

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