CVE-2024-56766 mtd: rawnand: fix double free in atmel_pmecc_create_user()
A double free vulnerability in the Linux kernel's Atmel PMECC NAND driver allows attackers to cause denial of service or potentially execute code.
- 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-2024-56766?
CVE-2024-56766 is a high-severity use after free vulnerability in Linux kernel, published on 6 Jan 2025. 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:
mtd: rawnand: fix double free in atmel_pmecc_create_user()
The "user" pointer was converted from being allocated with kzalloc() to being allocated by devm_kzalloc(). Calling kfree(user) will lead to a double free.
Weakness: CWE-415
Which versions are affected by CVE-2024-56766?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-56766?
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-2024-56766 being exploited?
There is no known exploitation of CVE-2024-56766 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-55303, AZL-56544, BELL-CVE-2024-56766, DEBIAN-CVE-2024-56766, GHSA-5r7w-j22r-58j4, UBUNTU-CVE-2024-56766.