CVE-2024-36976 Revert "media: v4l2-ctrls: show all owned controls in log_status"
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.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-36976, GHSA-8pf7-jhff-4vgr, UBUNTU-CVE-2024-36976.