CVE-2022-3621 Linux Kernel nilfs2 inode.c nilfs_bmap_lookup_at_level null pointer dereference

What is CVE-2022-3621?

CVE-2022-3621 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 classified as problematic. Affected is the function nilfs_bmap_lookup_at_level of the file fs/nilfs2/inode.c of the component nilfs2. The manipulation leads to null pointer dereference. It is possible to launch the attack remotely. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-211920.

Weakness: CWE-476, CWE-404

Which versions are affected by CVE-2022-3621?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2022-3621?

Apply the vendor's patch.

Is CVE-2022-3621 being exploited?

There is no known exploitation of CVE-2022-3621 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-2022-3621, GHSA-xcq5-jm7f-rp35, UBUNTU-CVE-2022-3621.