Vulnerability in Canonical Ltd. Ubuntu-Linux
CVE-2023-2612
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).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (18.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Canonical Ltd. Ubuntu-Linux — versions 0
- Canonical Ubuntu Linux — versions 20.04, 22.04, 22.10
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/kinetic/commit/ (Patch, Mailing List, patch)
- ubuntu.com/security/CVE-2023-2612 (vendor-advisory, Vendor Advisory)
- ubuntu.com/security/notices/USN-6122-1 (vendor-advisory, Vendor Advisory)
- ubuntu.com/security/notices/USN-6123-1 (vendor-advisory, Vendor Advisory)
- ubuntu.com/security/notices/USN-6124-1 (vendor-advisory, Vendor Advisory)
- ubuntu.com/security/notices/USN-6127-1 (vendor-advisory, Vendor Advisory)
- packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095…
Frequently asked questions
- What is CVE-2023-2612?
- CVE-2023-2612 is a medium-severity vulnerability in Canonical Ltd. Ubuntu-Linux, classified under Improper Locking. CVSS score: 4.4/10. Published 2023-05-31.
- How severe is CVE-2023-2612?
- Medium severity. CVSS v3 base score is 4.4 out of 10.
- Is CVE-2023-2612 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.