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Vulnerability record · CVE-2023-32629 · published 26 July 2023

CVE-2023-32629: Canonical ubuntu linux incorrect authorization vulnerability

Canonical · Ubuntu Linux

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

7.8 CVSS 3.1 High EPSS 9.1% · top 4.9% CWE-863 · Incorrect authorization
7.8CVSS 3.1 base score
9.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-32629 Third Party Advisory
https://lists.ubuntu.com/archives/kernel-team/2023-July/140920.html Mailing ListPatch
https://ubuntu.com/security/notices/USN-6250-1 Vendor Advisory
https://wiz.io/blog/ubuntu-overlayfs-vulnerability Exploit
http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-32629 Third Party Advisory
https://lists.ubuntu.com/archives/kernel-team/2023-July/140920.html Mailing ListPatch
https://ubuntu.com/security/notices/USN-6250-1 Vendor Advisory
https://wiz.io/blog/ubuntu-overlayfs-vulnerability Exploit

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Source: NIST National Vulnerability Database (record CVE-2023-32629), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.