CVE-2026-89438
Unknown
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.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedSep 11, 2026
First seenSep 11, 2026
How to fix
Update
- Linux Linux0d601126c7afda9bb94dfecc8b2c0a16f20d76cb, c9ee2770eb95ba316a56d776b2b66666b70c194b, 5b032e1dda486ca41d10536bd195bd8a559af1e2, 82d4afadb02fb4d7d7bb9230900904c10e49ec87, 124e2dbabe460c2a6e7440f4ad8af560131295c9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 12a7d2cb811dd8a884dea088a2701fcb8d00136e ≤ v < 0d601126c7afda9bb94dfecc8b2c0a16f20d76cb, 12a7d2cb811dd8a884dea088a2701fcb8d00136e ≤ v < c9ee2770eb95ba316a56d776b2b66666b70c194b, 12a7d2cb811dd8a884dea088a2701fcb8d00136e ≤ v < 5b032e1dda486ca41d10536bd195bd8a559af1e2, 12a7d2cb811dd8a884dea088a2701fcb8d00136e ≤ v < 82d4afadb02fb4d7d7bb9230900904c10e49ec87, 12a7d2cb811dd8a884dea088a2701fcb8d00136e ≤ v < 124e2dbabe460c2a6e7440f4ad8af560131295c9, 6.4 | 0d601126c7afda9bb94dfecc8b2c0a16f20d76cb, c9ee2770eb95ba316a56d776b2b66666b70c194b, 5b032e1dda486ca41d10536bd195bd8a559af1e2, 82d4afadb02fb4d7d7bb9230900904c10e49ec87, 124e2dbabe460c2a6e7440f4ad8af560131295c9 |
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