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CVE-2026-90272 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://git.kernel.org/stable/c/57b72442c1672963fd51ab441ca1b71f6dc79b66	kernel.org
https://git.kernel.org/stable/c/7c3b63386c27bed8d59a4b4c283d02860420eb0a	kernel.org
https://git.kernel.org/stable/c/988e11b69ef9d4034e19c64407030fa948580c3d	kernel.org

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes