CVE-2022-3646 Linux Kernel BPF segment.c nilfs_attach_log_writer memory leak

What is CVE-2022-3646?

CVE-2022-3646 is a low-severity denial of service vulnerability in Debian Debian Linux, published on 21 Oct 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability, which was classified as problematic, has been found in Linux Kernel. This issue affects the function nilfs_attach_log_writer of the file fs/nilfs2/segment.c of the component BPF. The manipulation leads to memory leak. The attack may be initiated remotely. It is recommended to apply a patch to fix this issue. The identifier VDB-211961 was assigned to this vulnerability.

Weakness: CWE-401, CWE-404

Which versions are affected by CVE-2022-3646?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2022-3646?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-3646 being exploited?

There is no known exploitation of CVE-2022-3646 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-2022-3646, GHSA-h2j4-qp68-f436, UBUNTU-CVE-2022-3646.