CVE-2026-90272

CVE CVE-2026-90272EUVD EUVD-2026-81865Published 2026-09-17T16:08:05.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 0; patch: 7.2.6; patch: 6.18.52; 58074a0fce66c6c97b35ce8a28ed4e7b780f9a8f <7c3b63386c27bed8d59a4b4c283d02860420eb0a; 58074a0fce66c6c97b35ce8a28ed4e7b780f9a8f <988e11b69ef9d4034e19c64407030fa948580c3d; patch: 7.3-rc1; 58074a0fce66c6c97b35ce8a28ed4e7b780f9a8f <57b72442c1672963fd51ab441ca1b71f6dc79b66; 6.17

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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