CVE-2023-3212

What it is

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.

At a glance

Exploitability

Can be exploited locally on the machine with an admin-level account. High risk of service disruption.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2023-06-23 20:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-14 21:17 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.3% in the next 30 days (EPSS).
• Severity: 4.4 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2023-06-23 20:15 UTC

Last modified

2026-10-14 21:17 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-476 · NULL pointer dereference

Record status

Modified

Affected

• Linux Kernel < 6.4
• Linux Kernel 6.4
• Fedoraproject Fedora 38
• Redhat Enterprise Linux 8.0
• Redhat Enterprise Linux 9.0
• Debian Linux 10.0
• Debian Linux 11.0
• Debian Linux 12.0

Attack profile CVSS 3.1 · 4.4

Attack vector

Local

Complexity

Low

Privileges needed

High

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-3212.md and follow it. Check whether this project is affected by CVE-2023-3212. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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