AZL-73692
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-73692.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-73692
- Upstream
- Published
- 2025-09-05T18:15:44Z
- Modified
- 2026-04-01T05:22:19.651865Z
- Summary
- CVE-2025-39681 affecting package kernel for versions less than 5.15.200.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
x86/cpu/hygon: Add missing resctrlcpudetect() in bsp_init helper
Since
923f3a2b48bd ("x86/resctrl: Query LLC monitoring properties once during boot")
resctrlcpudetect() has been moved from common CPU initialization code to the vendor-specific BSP init helper, while Hygon didn't put that call in their code.
This triggers a division by zero fault during early booting stage on our machines with X86FEATURECQM* supported, where getrdtmonresources() tries to calculate monl3config with uninitialized bootcpudata.x86cacheoccscale.
Add the missing resctrlcpudetect() in the Hygon BSP init helper.
[ bp: Massage commit message. ]
- References