CVE-2026-90272

In the Linux kernel, the following vulnerability has been resolved: perf: arm_pmuv3: Zero initialize hw_id branch stack field PERF_SAMPLE_BRANCH_HW_INDEX is supported by BRBE so hw_id is passed to userspace, but it's never set by the BRBE driver. Zero initialize it as it should be according to the docs: * For the architectures whose raw branch records are * already stored in age order, the hw_idx should be 0. It's probably too risky to remove PERF_SAMPLE_BRANCH_HW_INDEX from BRBE now in case anyone is setting it and reading the value, but zero initializing the whole struct also protects against the same issue with new fields that are added in the future.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/57b72442c1672963fd51ab441ca1b71f6dc79b66
https://git.kernel.org/stable/c/7c3b63386c27bed8d59a4b4c283d02860420eb0a
https://git.kernel.org/stable/c/988e11b69ef9d4034e19c64407030fa948580c3d

Configurations

No configuration.

History

17 Sep 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 17:17

Updated : 2026-09-17 17:17

NVD link : CVE-2026-90272

Mitre link : CVE-2026-90272

CVE.ORG link : CVE-2026-90272

JSON object : View

Products Affected

No product.

CWE

No CWE.

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