CVE-2023-53664 OPP: Fix potential null ptr dereference in dev_pm_opp_get_required_pstate()

What is CVE-2023-53664?

CVE-2023-53664 is a medium-severity vulnerability in Linux kernel, published on 7 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

OPP: Fix potential null ptr dereference in dev_pm_opp_get_required_pstate()

"opp" pointer is dereferenced before the IS_ERR_OR_NULL() check. Fix it by removing the dereference to cache opp_table and dereference it directly where opp_table is used.

This fixes the following smatch warning:

drivers/opp/core.c:232 dev_pm_opp_get_required_pstate() warn: variable dereferenced before IS_ERR check 'opp' (see line 230)

Weakness: CWE-476

Which versions are affected by CVE-2023-53664?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-53664?

Apply the vendor's patch.

Is CVE-2023-53664 being exploited?

There is no known exploitation of CVE-2023-53664 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2023-53664, DEBIAN-CVE-2023-53664, GHSA-p5vh-94g4-gf74, UBUNTU-CVE-2023-53664.