CVE-2026-72143 platform/x86: ISST: Restore SST-PP control to all domains
A bug in the Linux kernel Intel Speed Select Technology driver fails to restore performance controls for all power domains after resume, potentially causing inconsistent system performance.
- 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-2026-72143?
CVE-2026-72143 is a high-severity 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:
platform/x86: ISST: Restore SST-PP control to all domains
The SST-PP control offset is only restored to power domain 0 after resume. During suspend, control values are read and stored for all power domains.
Use pd_info->sst_base instead of power_domain_info->sst_base, which only points to power domain 0 base address.
Which versions are affected by CVE-2026-72143?
How do I fix CVE-2026-72143?
Apply the vendor's patch.
Is CVE-2026-72143 being exploited?
There is no known exploitation of CVE-2026-72143 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72143, DEBIAN-CVE-2026-72143, GHSA-cqvm-rfr6-chr5, UBUNTU-CVE-2026-72143.