CVE-2024-46739 uio_hv_generic: Fix kernel NULL pointer dereference in hv_uio_rescind

What is CVE-2024-46739?

CVE-2024-46739 is a medium-severity vulnerability in Linux kernel, published on 18 Sep 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:

uio_hv_generic: Fix kernel NULL pointer dereference in hv_uio_rescind

For primary VM Bus channels, primary_channel pointer is always NULL. This pointer is valid only for the secondary channels. Also, rescind callback is meant for primary channels only.

Fix NULL pointer dereference by retrieving the device_obj from the parent for the primary channel.

Weakness: CWE-476

Which versions are affected by CVE-2024-46739?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-46739?

Apply the vendor's patch.

Is CVE-2024-46739 being exploited?

There is no known exploitation of CVE-2024-46739 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-49398, BELL-CVE-2024-46739, DEBIAN-CVE-2024-46739, GHSA-w44h-95m4-q297, UBUNTU-CVE-2024-46739.