CVE-2026-64494 iio: light: gp2ap002: fix runtime PM leak on read error
A local attacker can cause a runtime PM reference leak in the gp2ap002 light sensor driver, preventing device autosuspend and leading to resource exhaustion.
- 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-2026-64494?
CVE-2026-64494 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: light: gp2ap002: fix runtime PM leak on read error
gp2ap002_read_raw() calls pm_runtime_get_sync() before reading the lux value, but if gp2ap002_get_lux() fails, it returns directly. This skips the pm_runtime_put_autosuspend() call at the "out" label, permanently leaking a runtime PM reference and preventing the device from autosuspending.
Replace the direct return with a "goto out" to ensure the reference is properly dropped on the error path.
Which versions are affected by CVE-2026-64494?
How do I fix CVE-2026-64494?
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-2026-64494 being exploited?
There is no known exploitation of CVE-2026-64494 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-64494, DEBIAN-CVE-2026-64494, GHSA-gpwj-cvm7-rmhj, ROOT-OS-UBUNTU-2204-CVE-2026-64494, UBUNTU-CVE-2026-64494.