CVE-2022-49917 ipvs: fix WARNING in ip_vs_app_net_cleanup()
A null pointer dereference in the Linux kernel IPVS module can cause a system crash during network namespace cleanup.
- 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-2022-49917?
CVE-2022-49917 is a high-severity vulnerability in Linux kernel, published on 1 May 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:
ipvs: fix WARNING in ip_vs_app_net_cleanup()
During the initialization of ip_vs_app_net_init(), if file ip_vs_app fails to be created, the initialization is successful by default. Therefore, the ip_vs_app file doesn't be found during the remove in ip_vs_app_net_cleanup(). It will cause WRNING.
The following is the stack information: name 'ip_vs_app' WARNING: CPU: 1 PID: 9 at fs/proc/generic.c:712 remove_proc_entry+0x389/0x460 Modules linked in: Workqueue: netns cleanup_net RIP: 0010:remove_proc_entry+0x389/0x460 Call Trace: <TASK> ops_exit_list+0x125/0x170 cleanup_net+0x4ea/0xb00 process_one_work+0x9bf/0x1710 worker_thread+0x665/0x1080 kthread+0x2e4/0x3a0 ret_from_fork+0x1f/0x30 </TASK>
Which versions are affected by CVE-2022-49917?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49917?
Apply the vendor's patch.
Is CVE-2022-49917 being exploited?
There is no known exploitation of CVE-2022-49917 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49917, GHSA-6mfv-xmmj-jgwf, UBUNTU-CVE-2022-49917.