What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-08-17 · updated 2026-06-17
• Weakness: CWE-476

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.]

Affected products

• Linux kernel: from 5.19 before 6.1.103; from 6.2 before 6.6.44; from 6.7 before 6.10.3 — fixed in 6.1.103, 6.10.3, 6.6.44

How to fix

Upgrade to a fixed version: Linux kernel 6.1.103, 6.10.3, 6.6.44. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/249212ceb4187783af3801c57b92a5a25d410621
• https://git.kernel.org/stable/c/9b4667ea67854f0b116fe22ad11ef5628c5b5b5f
• https://git.kernel.org/stable/c/b87e28050d9b0959de24574d587825cfab2f13fb
• https://git.kernel.org/stable/c/fe0f92fd5320b393e44ca210805e653ea90cc982
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

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