CVEvulnerability
CVE-2023-2640
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2023-07-26
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-863
Description
On Ubuntu kernels carrying both c914c0e27eb0 and "UBUNTU: SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.* xattrs", an unprivileged user may set privileged extended attributes on the mounted files, leading them to be set on the upper files without the appropriate security checks.
Affected configurations
• canonical ubuntu linux 23.04
Related
Weakness · CWE (1)
- CWE-863 Incorrect Authorization weakness
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640 Third Party Advisory
- https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.html Mailing List, Patch
- https://ubuntu.com/security/notices/USN-6250-1 Vendor Advisory
- https://wiz.io/blog/ubuntu-overlayfs-vulnerability Exploit, Mitigation, Third Party Advisory
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640 Third Party Advisory
- https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.html Mailing List, Patch
- https://ubuntu.com/security/notices/USN-6250-1 Vendor Advisory
- https://wiz.io/blog/ubuntu-overlayfs-vulnerability Exploit, Mitigation, Third Party Advisory