CVE-2023-2612

4.4 MEDIUM 0.3% exploit odds Fix listed

What it is

Jean-Baptiste Cayrou discovered that the shiftfs file system in the Ubuntu Linux kernel contained a race condition when handling inode locking in some situations. A local attacker could use this to cause a denial of service (kernel deadlock).

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

2023-05-31 00:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 05:53 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: 2023-05-31 00:15 UTC
Last modified: 2026-06-17 05:53 UTC
Exploit probability: 0.3% · EPSS, next 30 days
Weakness: CWE-667
Record status: Modified

Affected

Canonical Ubuntu Linux 20.04
Canonical Ubuntu Linux 22.04
Canonical Ubuntu Linux 22.10

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

Raw vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

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-2023-2612.md and follow it. Check whether this project is affected by CVE-2023-2612. 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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Fix and advisories

References

NVD record · CVE.org record