VDB

CVE-2026-89438

CVE-2026-89438 PUBLISHED

Reported by Linux · Published September 11, 2026

In the Linux kernel, the following vulnerability has been resolved: platform/x86: ISST: Validate logical CPU id and clos id Validate max CLOS ID and logical CPU ID for core power feature. Reject any clos level or logical CPU number greater than the supported maximum. These are used to calculate MMIO offset.

EPSS 0.20% · 10.1th percentile

Risk Scores

EPSS Score
0.20%
10.1th percentile

Affected Products

VendorProductVersions
LinuxLinux12a7d2cb811dd8a884dea088a2701fcb8d00136e, 12a7d2cb811dd8a884dea088a2701fcb8d00136e, 12a7d2cb811dd8a884dea088a2701fcb8d00136e
LinuxLinux6.4, 0, 6.6.157
linuxlinux_kernel6.4, 6.4, 6.4
LinuxLinux12a7d2cb811dd8a884dea088a2701fcb8d00136e, 12a7d2cb811dd8a884dea088a2701fcb8d00136e, 12a7d2cb811dd8a884dea088a2701fcb8d00136e

Timeline

  • Sep 11, 2026 CVE Published
  • Sep 12, 2026 EPSS Score
  • Sep 12, 2026 Coalition ESS Score
  • Sep 14, 2026 CVE Updated
  • Sep 17, 2026 EPSS Score

References

Open in Interactive Console →
$ Console Community · 100/wk Open console ›