CVE-2025-68182 wifi: iwlwifi: fix potential use after free in iwl_mld_remove_link()
A use-after-free vulnerability in the Linux kernel iwlwifi driver allows attackers to potentially execute code or cause a system crash.
- 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-2025-68182?
CVE-2025-68182 is a high-severity use after free vulnerability in Linux, published on 16 Dec 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:
wifi: iwlwifi: fix potential use after free in iwl_mld_remove_link()
This code frees "link" by calling kfree_rcu(link, rcu_head) and then it dereferences "link" to get the "link->fw_id". Save the "link->fw_id" first to avoid a potential use after free.
Which versions are affected by CVE-2025-68182?
How do I fix CVE-2025-68182?
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-2025-68182 being exploited?
There is no known exploitation of CVE-2025-68182 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2025-68182, DEBIAN-CVE-2025-68182, GHSA-p4pr-mf33-rjq8, UBUNTU-CVE-2025-68182.