AZL-100214
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-100214.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-100214
- Upstream
- Published
- 2026-09-11T20:19:24Z
- Modified
- 2026-09-13T06:06:36Z
- Summary
- CVE-2026-89442 affecting package kernel 6.6.150.1-1
- Details
-
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 is [0, topology_max_packages()). The '>' comparison lets socket_id == topology_max_packages() pass and index one entry past the array.
In addition, isst_common.sst_inst[socket_id] is NULL for an in-range package that has no bound TPMI SST instance, and the pointer is used without a NULL check. Both the out-of-bounds entry and the NULL pointer are then dereferenced by map_partition_power_domain_id() and the following power_domain_info access.
Reject socket_id >= topology_max_packages() and a NULL sst_inst, matching the checks already performed by get_instance().
- References