CVE-2026-64493 iio: pressure: mpl115: fix runtime PM leak on read error
A resource leak in the MPL115 pressure sensor driver prevents device autosuspend, potentially causing denial of service for local attackers.
- 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-2026-64493?
CVE-2026-64493 is a denial of service vulnerability in Linux, published on 25 Jul 2026. 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:
iio: pressure: mpl115: fix runtime PM leak on read error
mpl115_read_raw() takes a runtime PM reference with pm_runtime_get_sync() before reading the processed pressure or raw temperature, but on the read error path it returns without calling pm_runtime_put_autosuspend(). Each failed read therefore leaks a runtime PM reference and prevents the device from autosuspending.
Drop the reference before checking the return value so both the success and error paths are balanced.
Which versions are affected by CVE-2026-64493?
How do I fix CVE-2026-64493?
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-2026-64493 being exploited?
There is no known exploitation of CVE-2026-64493 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-64493, DEBIAN-CVE-2026-64493, GHSA-99cr-f9mf-qm45, ROOT-OS-UBUNTU-2204-CVE-2026-64493, UBUNTU-CVE-2026-64493.