CVE-2022-3623 Linux Kernel BPF gup.c follow_page_pte race condition

What is CVE-2022-3623?

CVE-2022-3623 is a medium-severity vulnerability in Debian Debian Linux, published on 20 Oct 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this vulnerability is the function follow_page_pte of the file mm/gup.c of the component BPF. The manipulation leads to race condition. The attack can be launched remotely. It is recommended to apply a patch to fix this issue. The identifier VDB-211921 was assigned to this vulnerability.

Weakness: CWE-362

Which versions are affected by CVE-2022-3623?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2022-3623?

Apply the vendor's patch.

Is CVE-2022-3623 being exploited?

There is no known exploitation of CVE-2022-3623 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2022-3623, GHSA-q52p-4hj9-4wrq, UBUNTU-CVE-2022-3623.