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THREAT OPS › Threat News › [NVD] CVE-2026-89442 (HIGH 7.8) — In the Linux kernel, the following vulnerability has been resolved: platform/x86: ISST: Validate socket ID in clos_assoc ioctl isst_if_clos_assoc() validates the user-supplied socket_id with 'socket_id > topology_max_packages()', but isst_common.sst_inst[] is allocated with top

[NVD] CVE-2026-89442 (HIGH 7.8) — In the Linux kernel, the following vulnerability has been resolved: platform/x86: ISST: Validate socket ID in clos_assoc ioctl isst_if_clos_assoc() validates the user-supplied socket_id with 'socket_id > topology_max_packages()', but isst_common.sst_inst[] is allocated with top

mednvdPublished 2026-09-11

CVE-2026-89442 CVSS: 7.8 HIGH Published: 2026-09-11T20:19:24.613

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

platform/x86: ISST: Validate socket ID in clos_assoc ioctl

isst_if_clos_assoc() validates the user-supplied socket_id with 'socket_id > topology_max_packages()', but isst_common.sst_inst[] is allocated with topology_max_packages() entries, so the valid index range

Indicators of compromise

CVE-2026-89442cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-89442