CVE-2026-89438
platform/x86: ISST: Validate logical CPU id and clos id
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 11, 2026 |
| Last Updated | Sep 14, 2026 |
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Affected Versions
Linux / Linux
12a7d2cb811dd8a884dea088a2701fcb8d00136e < 0d601126c7afda9bb94dfecc8b2c0a16f20d76cb 12a7d2cb811dd8a884dea088a2701fcb8d00136e < c9ee2770eb95ba316a56d776b2b66666b70c194b 12a7d2cb811dd8a884dea088a2701fcb8d00136e < 5b032e1dda486ca41d10536bd195bd8a559af1e2 12a7d2cb811dd8a884dea088a2701fcb8d00136e < 82d4afadb02fb4d7d7bb9230900904c10e49ec87 12a7d2cb811dd8a884dea088a2701fcb8d00136e < 124e2dbabe460c2a6e7440f4ad8af560131295c9
Linux / Linux
6.4
References
git.kernel.org: https://git.kernel.org/stable/c/0d601126c7afda9bb94dfecc8b2c0a16f20d76cb git.kernel.org: https://git.kernel.org/stable/c/c9ee2770eb95ba316a56d776b2b66666b70c194b git.kernel.org: https://git.kernel.org/stable/c/5b032e1dda486ca41d10536bd195bd8a559af1e2 git.kernel.org: https://git.kernel.org/stable/c/82d4afadb02fb4d7d7bb9230900904c10e49ec87 git.kernel.org: https://git.kernel.org/stable/c/124e2dbabe460c2a6e7440f4ad8af560131295c9