CVE-2024-50071 pinctrl: nuvoton: fix a double free in ma35_pinctrl_dt_node_to_map_func()
A double free vulnerability in the Nuvoton pinctrl driver allows attackers to cause a 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-2024-50071?
CVE-2024-50071 is a high-severity use after free vulnerability in Linux kernel, published on 29 Oct 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:
pinctrl: nuvoton: fix a double free in ma35_pinctrl_dt_node_to_map_func()
'new_map' is allocated using devm_* which takes care of freeing the allocated data on device removal, call to
.dt_free_map = pinconf_generic_dt_free_map
double frees the map as pinconf_generic_dt_free_map() calls pinctrl_utils_free_map().
Fix this by using kcalloc() instead of auto-managed devm_kcalloc().
Weakness: CWE-415
Which versions are affected by CVE-2024-50071?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-50071?
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-2024-50071 being exploited?
There is no known exploitation of CVE-2024-50071 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-50071, DEBIAN-CVE-2024-50071, GHSA-m2wj-x8qh-wqcv, UBUNTU-CVE-2024-50071.