CVE-2026-89438Medium· 5.5▾ SunlitIn 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 gre…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
— → 4.7
none → medium
— → 4.7
none → medium
— → 5.5
none → medium
0.2% → 0.2%
Last analysed / modified upstream
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.
Linux >= 12a7d2cb811dd8a884dea088a2701fcb8d00136e < 0d601126c7afda9bb94dfecc8b2c0a16f20d76cbLinux >= 12a7d2cb811dd8a884dea088a2701fcb8d00136e < c9ee2770eb95ba316a56d776b2b66666b70c194bLinux >= 12a7d2cb811dd8a884dea088a2701fcb8d00136e < 5b032e1dda486ca41d10536bd195bd8a559af1e2Linux >= 12a7d2cb811dd8a884dea088a2701fcb8d00136e < 82d4afadb02fb4d7d7bb9230900904c10e49ec87Linux >= 12a7d2cb811dd8a884dea088a2701fcb8d00136e < 124e2dbabe460c2a6e7440f4ad8af560131295c9Linux 6.4Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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