CVE-2026-46134 platform/chrome: cros_ec_typec: Init mutex in Thunderbolt registration

What is CVE-2026-46134?

CVE-2026-46134 is a medium-severity vulnerability in Linux kernel, published on 28 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:

platform/chrome: cros_ec_typec: Init mutex in Thunderbolt registration

cros_typec_register_thunderbolt() missed initializing the `adata->lock` mutex. This leads to a NULL dereference when the mutex is later acquired (e.g. in cros_typec_altmode_work()).

Initialize the mutex in cros_typec_register_thunderbolt() to fix the issue.

Weakness: CWE-476

Which versions are affected by CVE-2026-46134?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-46134?

Apply the vendor's patch.

Is CVE-2026-46134 being exploited?

There is no known exploitation of CVE-2026-46134 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-2026-46134, DEBIAN-CVE-2026-46134, GHSA-2xcf-7w6q-9vxc, UBUNTU-CVE-2026-46134.