AZL-100518
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-100518.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-100518
- Upstream
- Published
- 2026-09-11T20:19:24Z
- Modified
- 2026-09-12T14:15:26Z
- Summary
- CVE-2026-89443 affecting package kernel 6.6.150.1-1
- Details
-
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 first.
The adjacent level-info helpers reject levels above max_level before reading the same per-level register block. Add the same bounds checks to the mask helpers, and reject disabled SST-PP levels in isst_if_get_perf_level_mask() to match isst_if_get_perf_level_info().
This prevents out-of-bounds reads from the per-level offset table on invalid ioctl input.
- References