linux-kernel - Re: [PATCH] cpufreq: scpi: Fix null-ptr-deref in scpi_cpufreq_get

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <e8e785a8-5f8f-4ea2-a150-2837f47b4472@web.de>
Date: Mon, 7 Apr 2025 11:06:08 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Henry Martin <bsdhenrymartin@...il.com>, linux-pm@...r.kernel.org,
 arm-scmi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc: LKML <linux-kernel@...r.kernel.org>,
 Cristian Marussi <cristian.marussi@....com>,
 "Rafael J. Wysocki" <rafael@...nel.org>, Sudeep Holla
 <sudeep.holla@....com>, Viresh Kumar <viresh.kumar@...aro.org>
Subject: Re: [PATCH] cpufreq: scpi: Fix null-ptr-deref in
 scpi_cpufreq_get_rate()

> cpufreq_cpu_get_raw() can return NULL when the target CPU is not present
> in the policy->cpus mask. scpi_cpufreq_get_rate() does not check for
> this case, which results in a NULL pointer dereference.

See also once more:
https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.15-rc1#n94

Can any other summary phrase variant become more desirable accordingly?

Regards,
Markus