CVE-2024-35856 Bluetooth: btusb: mediatek: Fix double free of skb in coredump
A double free vulnerability in the Linux kernel's Bluetooth driver allows attackers to cause a denial of service or potentially execute code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-35856?
CVE-2024-35856 is a high-severity use after free vulnerability in Linux kernel, published on 17 May 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:
Bluetooth: btusb: mediatek: Fix double free of skb in coredump
hci_devcd_append() would free the skb on error so the caller don't have to free it again otherwise it would cause the double free of skb.
Reported-by : Dan Carpenter <[email protected]>
Weakness: CWE-415
Which versions are affected by CVE-2024-35856?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-35856?
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-2024-35856 being exploited?
There is no known exploitation of CVE-2024-35856 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-35856, DEBIAN-CVE-2024-35856, GHSA-362q-j64x-4ggr, UBUNTU-CVE-2024-35856.