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
EPSS: 0.104 (95.2th percentile) — read the EPSS interpretation.
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.
Affected products
- Canonical Ubuntu Kernel — versions 0
- Canonical Ubuntu_linux — versions 23.04
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@ubuntu.com (vendor-advisory, Vendor Advisory)
- security@ubuntu.com (mailing-list, Patch, Mailing List)
- security@ubuntu.com (Exploit, technical-description)
- security@ubuntu.com (issue-tracking, Third Party Advisory)
- security@ubuntu.com
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.