CVE-2025-38087 net/sched: fix use-after-free in taprio_dev_notifier
A race condition in the Linux kernel's taprio scheduler allows a use-after-free, potentially enabling local attackers to execute code or escalate privileges.
- 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-2025-38087?
CVE-2025-38087 is a high-severity use after free vulnerability in Linux kernel, published on 30 Jun 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:
net/sched: fix use-after-free in taprio_dev_notifier
Since taprio’s taprio_dev_notifier() isn’t protected by an RCU read-side critical section, a race with advance_sched() can lead to a use-after-free.
Adding rcu_read_lock() inside taprio_dev_notifier() prevents this.
Weakness: CWE-416
Which versions are affected by CVE-2025-38087?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-38087?
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-2025-38087 being exploited?
There is no known exploitation of CVE-2025-38087 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-64395, BELL-CVE-2025-38087, DEBIAN-CVE-2025-38087, GHSA-fp4c-f74p-8cg7, ROOT-OS-UBUNTU-2404-CVE-2025-38087, UBUNTU-CVE-2025-38087.