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

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-10-20 · updated 2026-10-14
Weakness: CWE-404

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.

Affected products

Debian Linux: 10.0
Linux kernel: all versions

References

https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=21a87d88c2253350e115029f14fe2a10a7e6c856
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html
https://vuldb.com/?id.211920
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=21a87d88c2253350e115029f14fe2a10a7e6c856
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html
https://vuldb.com/?id.211920
https://cert-portal.siemens.com/productcert/html/ssa-794697.html

Get alerted when CVE-2022-3621 or the next vulnerability affects your stack