linux-kernel - Re: CVE-2025-37832: cpufreq: sun50i: prevent out-of-bounds access

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Message-ID: <1db6d340-bfae-4d81-a1d1-dcbd7bc1294f@suse.com>
Date: Fri, 30 May 2025 15:57:35 +0200
From: Giovanni Gherdovich <giovanni.gherdovich@...e.com>
To: cve@...nel.org, linux-kernel@...r.kernel.org
Cc: linux-cve-announce@...r.kernel.org
Subject: Re: CVE-2025-37832: cpufreq: sun50i: prevent out-of-bounds access

On Thu May 8, 2025 08:39, Greg Kroah-Hartman wrote:
> A KASAN enabled kernel reports an out-of-bounds access when handling the
> nvmem cell in the sun50i cpufreq driver:
> [...]

The invalid data that may be read comes from a ROM in the SoC,
programmed by the vendor, and is only used to configure CPU frequency
and voltage in the cpufreq framework.

Even assuming that improper frequency/voltage settings constitute a
security risk, writing to the ROM in question is at least a privileged
operation, and may require physical access to the SoC.

I don't think this qualifies as vulnerability.

Giovanni