CVE-2024-43833 media: v4l: async: Fix NULL pointer dereference in adding ancillary links

What is CVE-2024-43833?

CVE-2024-43833 is a medium-severity vulnerability in Linux kernel, published on 17 Aug 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:

media: v4l: async: Fix NULL pointer dereference in adding ancillary links

In v4l2_async_create_ancillary_links(), ancillary links are created for lens and flash sub-devices. These are sub-device to sub-device links and if the async notifier is related to a V4L2 device, the source sub-device of the ancillary link is NULL, leading to a NULL pointer dereference. Check the notifier's sd field is non-NULL in v4l2_async_create_ancillary_links().

[Sakari Ailus: Reword the subject and commit messages slightly.]

Weakness: CWE-476

Which versions are affected by CVE-2024-43833?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-43833?

Apply the vendor's patch.

Is CVE-2024-43833 being exploited?

There is no known exploitation of CVE-2024-43833 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-48030, BELL-CVE-2024-43833, DEBIAN-CVE-2024-43833, GHSA-565f-cr27-p63x, UBUNTU-CVE-2024-43833.