Auth bypass in Canonical Ubuntu Kernel
CVE-2023-32629
Local privilege escalation vulnerability in Ubuntu Kernels overlayfs ovl_copy_up_meta_inode_data skip permission checks when calling ovl_do_setxattr on Ubuntu kernels
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.091 (95.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.104 · newest: 0.091 · change: -0.013
Affected products
- Canonical Ubuntu Kernel — versions 0
- Canonical Ubuntu Linux — versions 23.04
Weakness classification (CWE)
Public proof-of-concept exploits
References
- ubuntu.com/security/notices/USN-6250-1 (vendor-advisory, Vendor Advisory)
- lists.ubuntu.com/archives/kernel-team/2023-July/140920.html (mailing-list, Patch, Mailing List)
- wiz.io/blog/ubuntu-overlayfs-vulnerability (Exploit, technical-description)
- cve.mitre.org/cgi-bin/cvename.cgi (issue-tracking, Third Party Advisory)
- packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097…
Frequently asked questions
- What is CVE-2023-32629?
- CVE-2023-32629 is a high-severity vulnerability in Canonical Ubuntu Kernel, classified under Incorrect Authorization. CVSS score: 7.8/10. Published 2023-07-26.
- How severe is CVE-2023-32629?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2023-32629 known to be exploited?
- 61 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.