CVE-2022-50708 HSI: ssi_protocol: fix potential resource leak in ssip_pn_open()
A resource leak in the Linux kernel HSI driver allows local attackers to exhaust system resources, potentially causing a denial of service.
- 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-2022-50708?
CVE-2022-50708 is a denial of service vulnerability in Linux, published on 24 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:
HSI: ssi_protocol: fix potential resource leak in ssip_pn_open()
ssip_pn_open() claims the HSI client's port with hsi_claim_port(). When hsi_register_port_event() gets some error and returns a negetive value, the HSI client's port should be released with hsi_release_port().
Fix it by calling hsi_release_port() when hsi_register_port_event() fails.
Which versions are affected by CVE-2022-50708?
How do I fix CVE-2022-50708?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-50708 being exploited?
There is no known exploitation of CVE-2022-50708 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-50708, GHSA-6pv9-7wm9-9v5x, ROOT-OS-DEBIAN-11-CVE-2022-50708, ROOT-OS-UBUNTU-2204-CVE-2022-50708, UBUNTU-CVE-2022-50708.