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THREAT OPS › Threat News › [NVD] CVE-2026-89443 (HIGH 7.1) — In the Linux kernel, the following vulnerability has been resolved: platform/x86: ISST: Validate level in perf mask ioctls isst_if_get_perf_level_mask() and isst_if_get_base_freq_mask() use the user-provided level as an index into perf_levels[] via _read_pp_level_info() and _re

[NVD] CVE-2026-89443 (HIGH 7.1) — In the Linux kernel, the following vulnerability has been resolved: platform/x86: ISST: Validate level in perf mask ioctls isst_if_get_perf_level_mask() and isst_if_get_base_freq_mask() use the user-provided level as an index into perf_levels[] via _read_pp_level_info() and _re

mednvdPublished 2026-09-11

CVE-2026-89443 CVSS: 7.1 HIGH Published: 2026-09-11T20:19:24.737

In the Linux kernel, the following vulnerability has been resolved:

platform/x86: ISST: Validate level in perf mask ioctls

isst_if_get_perf_level_mask() and isst_if_get_base_freq_mask() use the user-provided level as an index into perf_levels[] via _read_pp_level_info() and _read_bf_level_info(), but neither helper validates it fi

Indicators of compromise

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-89443