CVE-2026-72031 ata: libata-core: Add NOLPM quirk for PNY CS900 1TB SSD
A specific SSD model causes the Linux kernel to drop the drive from the bus during idle, resulting in a filesystem read-only state and denial of service.
- 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-2026-72031?
CVE-2026-72031 is a denial of service vulnerability in Linux, published on 15 Aug 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:
ata: libata-core: Add NOLPM quirk for PNY CS900 1TB SSD
The PNY CS900 1TB SSD (Phison PS3111-S11, DRAM-less) drops off the bus after entering Device-Initiated Slumber during idle. With the default med_power_with_dipm policy the link goes down (SStatus 1 SControl 300) and does not recover, forcing the filesystem read-only. Forcing max_performance keeps the link stable across prolonged idle.
Add a NOLPM quirk so link power management is disabled for this drive specifically, leaving it intact for other devices on the host.
Which versions are affected by CVE-2026-72031?
How do I fix CVE-2026-72031?
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-2026-72031 being exploited?
There is no known exploitation of CVE-2026-72031 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72031, DEBIAN-CVE-2026-72031, GHSA-hr25-grq7-6pp2, UBUNTU-CVE-2026-72031.