CVE-2023-2640
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2023-2640
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
Canonical Ubuntu Linux 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Canonical Ubuntu Linux是英国科能软件（Canonical）公司的一套Linux操作系统。 Canonical Ubuntu Linux存在安全漏洞，该漏洞源于内核中的OverlayFS没有执行权限检查，导致存在权限提升漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Shenlong Deep Dive — AI Deep Analysis
10-question deep dive: root cause, exploitation, mitigation, urgency. Read summary free, full version requires login.
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Canonical | Ubuntu Kernel | - | - |
II. Public POCs for CVE-2023-2640
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | CVE-2023-2640 CVE-2023-32629 | https://github.com/OllaPapito/gameoverlay | POC Details |
| 2 | GameoverlayFS (CVE-2023-2640 and CVE-2023-32629) exploit in Shell Script tested on Ubuntu 20.04 Kernel 5.4.0 | https://github.com/luanoliveira350/GameOverlayFS | POC Details |
| 3 | GameOver(lay) Ubuntu Privilege Escalation | https://github.com/g1vi/CVE-2023-2640-CVE-2023-32629 | POC Details |
| 4 | None | https://github.com/vinetsuicide/CVE-2023-2640-CVE-2023-32629 | POC Details |
| 5 | Escalating Privilege using CVE-2023-2640 CVE-2023-3262 | https://github.com/SanjayRagavendar/Ubuntu-GameOver-Lay | POC Details |
| 6 | None | https://github.com/Nkipohcs/CVE-2023-2640-CVE-2023-32629 | POC Details |
| 7 | None | https://github.com/musorblyat/CVE-2023-2640-CVE-2023-32629 | POC Details |
| 8 | None | https://github.com/K5LK/CVE-2023-2640-32629 | POC Details |
| 9 | A local privilege escalation vulnerability has been discovered in the OverlayFS module of the Ubuntu kernel. This vulnerability could allow an attacker with local access to escalate their privileges, potentially gaining root-like access to the system. | https://github.com/projectdiscovery/nuclei-templates/blob/main/code/cves/2023/CVE-2023-2640.yaml | POC Details |
| 10 | Dimostrazione di una vulnerabilità RCE (Remote Code Execution) in phpMyAdmin 4.8.1, con exploit per reverse shell e analisi di privilege escalation tramite la vulnerabilità CVE-2023-2640/CVE-2023-32629 (GameOverlay) su kernel Linux. | https://github.com/filippo-zullo98/phpMyAdmin-RCE-Exploit-Lab | POC Details |
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2023-2640
请登录查看更多情报信息。
- https://wiz.io/blog/ubuntu-overlayfs-vulnerabilitytechnical-description
- https://ubuntu.com/security/notices/USN-6250-1vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2023-2640
IV. Related Vulnerabilities
Same product: Ubuntu Kernel
Same vendor: Canonical
- CVE-2026-6970
authd Denial of Service and Local Privilege Escalation - CVE-2026-6369
Exposed Session Token in canonical-livepatch client snap - CVE-2026-5412
Juju CloudSpec API could leak senstive information - CVE-2026-5774
Juju API Server Denial of Service and Authentication Replay - CVE-2025-14551
Senstive information disclosure was affecting subiquity
Same weakness: CWE-863
- CVE-2026-42571
Privilege Escalation Attack affecting Pelican Web UI - CVE-2025-15633
HCL BigFix WebUI is affected by an improper authorization vu - CVE-2026-42296
Argo Workflows has incomplete fix for CVE-2026-31892: hostNe - CVE-2025-66170
Apache CloudStack: Any user can list backups that they shoul - CVE-2026-41903
FreeScout IDOR Vulnerability: PERM_EDIT_USERS allows modifyi
V. Comments for CVE-2023-2640
No comments yet