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CVE-2026-72143: platform/x86: ISST: Restore SST-PP control to all domains

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-10-16

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.

Affected products

• Linux kernel: from 6.18.16 before 6.18.40; from 6.19.6 before 6.20; 7.0 — fixed in 6.18.40, 6.20, 7.2

How to fix

Upgrade to a fixed version: Linux kernel 6.18.40, 6.20, 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2565a28cdcdcb035e151d285efcba26bccb3726e
• https://git.kernel.org/stable/c/2a42f651cce91e9cbe65fe933622c522cbb1868b
• https://git.kernel.org/stable/c/cea03d67db3a880893360bdbb1b0b8d9b33b1799

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