CVE-2024-53103 hv_sock: Initializing vsk->trans to NULL to prevent a dangling pointer
A dangling pointer in the Linux kernel's hv_sock module can lead to use-after-free, potentially allowing code execution or denial of service.
- 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-2024-53103?
CVE-2024-53103 is a high-severity use after free vulnerability in Linux kernel, published on 2 Dec 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:
hv_sock: Initializing vsk->trans to NULL to prevent a dangling pointer
When hvs is released, there is a possibility that vsk->trans may not be initialized to NULL, which could lead to a dangling pointer. This issue is resolved by initializing vsk->trans to NULL.
Weakness: CWE-416
Which versions are affected by CVE-2024-53103?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-53103?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2024-53103 being exploited?
There is no known exploitation of CVE-2024-53103 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-54942, BELL-CVE-2024-53103, DEBIAN-CVE-2024-53103, GHSA-m934-94j6-4844, UBUNTU-CVE-2024-53103.