CVE-2023-0386
Confirmed PUBLISHEDA flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux...
1 day faster than CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system.
- CVE Published
- Mar 22, 2023
- Exploitation Reported
- Jun 01, 2026
- CVSS
- 7.8 High
- EPSS
- 7.9%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| n/a |
Kernel
|
Linux kernel 6.2-rc6 |
Affected |
CVE References
- DSA-5402 debian.org · Vendor Advisory https://www.debian.org/security/2023/dsa-5402
- [debian-lts-announce] 20230605 [SECURITY] [DLA 3446-1] linux-5.10 security update lists.debian.org · Mailing List https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html
- [debian-lts-announce] 20240627 [SECURITY] [DLA 3840-1] linux security update lists.debian.org · Mailing List https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/... git.kernel.org · CVE Record https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/co...
- security.netapp.com/advisory/ntap-20230420-0004 security.netapp.com · CVE Record https://security.netapp.com/advisory/ntap-20230420-0004/
Show 1 more reference
- packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Noti... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Securit...
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CVE First | 2026-06-01 10:33 UTC |
| CISA | 2026-06-02 14:07 UTC |
| Daily CyberSecurity | 2026-06-10 02:20 UTC |
Scanner Artifacts
Nuclei and Metasploit references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Metasploit | https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/cve_2023_0386_overlayfs_priv_esc.rb | Apr 28, 2025 |
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
Exploited in the wild
Recorded 2026-06-01 13:30:39 UTC · CISA
Proof of concept available
Recorded 2023-05-05 03:02:13 UTC · GitHub
Weaknesses (CWE)
-
Improper Ownership Management
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Metasploit | https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/cve_2023_0386_overlayfs_priv_esc.rb | Apr 28, 2025 |
Recent Mentions
Daily CyberSecurity · Jun 10, 2026
Federal Registry Alerts Enterprise Teams to Real-World Infiltration Risks The Cybersecurity and Infrastructure Security Agency updated its primary The post CISA Expands Active Exploit Catalog with Cisco, Arista, and Chromium Flaws appeared first on Daily CyberSecurity. Related posts: Linux Kernel Flaw (CVE-2023-0386) Actively Exploited for Root Privilege Escalation, PoC Available CVE-2025-23171 & CVE-2025-23172: Versa Director Bugs Open Doors to Webshell Uploads and Command Execution CISA KEV Alert: EOL D-Link and Array Networks Command Injection Under Active Attack
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2023-12-23 11:01:55 UTC · 2 stars
github · Created 2023-06-28 07:49:52 UTC · 16 stars
非常简单的CVE-2023-0386's exp and analysis.Use c and sh.
github · Created 2023-05-16 10:26:10 UTC · 40 stars
Vulnerabilities Exploitation On Ubuntu 22.04
github · Created 2023-05-06 06:07:23 UTC · 117 stars
CVE-2023-0386 analysis and Exp
github · Created 2023-05-05 03:02:13 UTC · 391 stars
CVE-2023-0386在ubuntu22.04上的提权
github · Created 2023-05-04 11:55:43 UTC · 4 stars
github · Created 2023-04-20 08:51:20 UTC · 10 stars
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
02:20 UTC about 1 month ago02:20 UTC · about 1 month ago
KEV confirmed by Daily CyberSecurity
Exploitation attested by an external source
-
14:07 UTC about 2 months ago14:07 UTC · about 2 months ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
10:33 UTC about 2 months ago10:33 UTC · about 2 months ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
15:02 UTC about 1 year ago15:02 UTC · about 1 year ago
Metasploit module available
Exploit module available
-
03:02 UTC about 3 years ago03:02 UTC · about 3 years ago
Public PoC available
Public proof-of-concept code published
-
00:00 UTC over 3 years ago00:00 UTC · over 3 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC over 3 years ago00:00 UTC · over 3 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2023-0386
{
"cve_id": "CVE-2023-0386",
"title": "A flaw was found in the Linux kernel, where unauthorized access to the execut...",
"affected_vendor": "Linux",
"affected_product": "Linux kernel",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 7.8,
"epss_score": 0.0788,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}