CVE-2021-46995 can: mcp251xfd: mcp251xfd_probe(): fix an error pointer dereference in probe

What is CVE-2021-46995?

CVE-2021-46995 is a medium-severity vulnerability in Linux kernel, published on 28 Feb 2024. 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:

can: mcp251xfd: mcp251xfd_probe(): fix an error pointer dereference in probe

When we converted this code to use dev_err_probe() we accidentally removed a return. It means that if devm_clk_get() it will lead to an Oops when we call clk_get_rate() on the next line.

Weakness: CWE-476

Which versions are affected by CVE-2021-46995?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2021-46995?

No fix has been published for CVE-2021-46995 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-46995 being exploited?

There is no known exploitation of CVE-2021-46995 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 GHSA-5vm6-785f-3cj3, UBUNTU-CVE-2021-46995.