CVE-2026-43160 mfd: macsmc: Initialize mutex

What is CVE-2026-43160?

CVE-2026-43160 is a medium-severity vulnerability in Linux kernel, published on 6 May 2026. 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:

mfd: macsmc: Initialize mutex

Initialize struct apple_smc's mutex in apple_smc_probe(). Using the mutex uninitialized surprisingly resulted only in occasional NULL pointer dereferences in apple_smc_read() calls from the probe() functions of sub devices.

Weakness: CWE-908

Which versions are affected by CVE-2026-43160?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-43160?

Apply the vendor's patch.

Is CVE-2026-43160 being exploited?

There is no known exploitation of CVE-2026-43160 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-2026-43160, DEBIAN-CVE-2026-43160, GHSA-84vf-8m4p-c2c4, UBUNTU-CVE-2026-43160.