CVE-2023-3212 Null dereference in Linux kernel (gfs2 file system)

What is CVE-2023-3212?

CVE-2023-3212 is a medium-severity vulnerability in Debian Debian Linux, published on 23 Jun 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A NULL pointer dereference issue was found in the gfs2 file system in the Linux kernel. It occurs on corrupt gfs2 file systems when the evict code tries to reference the journal descriptor structure after it has been freed and set to NULL. A privileged local user could use this flaw to cause a kernel panic.

Weakness: CWE-476

Which versions are affected by CVE-2023-3212?

It affects 9 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Linux kernel, Netapp H300s Firmware, Netapp H410c Firmware, Netapp H410s Firmware and 3 more.

How do I fix CVE-2023-3212?

Apply the vendor's patch.

Is CVE-2023-3212 being exploited?

There is no known exploitation of CVE-2023-3212 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

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• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

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

Also known as AZL-27308, DEBIAN-CVE-2023-3212, GHSA-h6hv-h4xf-gmgh, UBUNTU-CVE-2023-3212.