Riskcovery

CVE-2026-89438

platform/x86: ISST: Validate logical CPU id and clos id

State
Published
Severity
Not scored
Published
Sep 11, 2026
Updated
Oct 19, 2026
Reserved
Sep 11, 2026

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 12a7d2cb811dd8a884dea088a2701fcb8d00136e to before 0d601126c7afda9bb94dfecc8b2c0a16f20d76cbAffected
  • 12a7d2cb811dd8a884dea088a2701fcb8d00136e to before c9ee2770eb95ba316a56d776b2b66666b70c194bAffected
  • 12a7d2cb811dd8a884dea088a2701fcb8d00136e to before 5b032e1dda486ca41d10536bd195bd8a559af1e2Affected
  • 12a7d2cb811dd8a884dea088a2701fcb8d00136e to before 82d4afadb02fb4d7d7bb9230900904c10e49ec87Affected
  • 12a7d2cb811dd8a884dea088a2701fcb8d00136e to before 124e2dbabe460c2a6e7440f4ad8af560131295c9Affected
LinuxLinux
  • 6.4Affected
  • before 6.4Not affected
  • 6.6.157 through 6.6.*Not affected
  • 6.12.109 through 6.12.*Not affected
  • 6.18.50 through 6.18.*Not affected
  • 7.2.4 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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