CVE-2026-89438

CVE-2026-89438: vulnerability in Linux

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

Published · Updated

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 0.2%
exploitation probability
0.2%top 90% of all CVEs
observed exploitation
nono source reports it
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.
Affected products
Linux · Linux
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References
https://git.kernel.org/stable/c/0d601126c7afda9bb94dfecc8b2c0a16f20d76cbhttps://git.kernel.org/stable/c/124e2dbabe460c2a6e7440f4ad8af560131295c9https://git.kernel.org/stable/c/5b032e1dda486ca41d10536bd195bd8a559af1e2https://git.kernel.org/stable/c/82d4afadb02fb4d7d7bb9230900904c10e49ec87https://git.kernel.org/stable/c/c9ee2770eb95ba316a56d776b2b66666b70c194b