CVE-2023-0386

CRITICALNVD 7.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-06-17), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 8%CVSS: 7.8Exploit: cisa kev · ssvc active · Metasploit · public exploitExposed: 0

A fix is available — apply it.

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.

CVSS v3
7.8
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
8%
EPSS %ILE
94%
KEV
⚠ Exploited

Published

March 22, 2023

Last Modified

November 4, 2025

Advisory Details (6)

Auto-updated Jun 3, 2026
Patch available.
generic Patch Available

[SECURITY] [DLA 3840-1] linux security update

https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
generic Patch Available

[SECURITY] [DLA 3446-1] linux-5.10 security update

https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html
generic

ovl: fail on invalid uid/gid mapping at copy up - kernel/git/torvalds/linux.git - Linux kernel source tree

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a
generic

Packet Storm

http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html
generic

[SECURITY] [DSA 5402-1] linux security update

https://www.debian.org/security/2023/dsa-5402
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20230420-0004/

Vendor Advisories for CVE-2023-0386(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(17)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-5.15.0-1030-intel-iotg (5.15.0-1030.35~20.04.1) @ focal2026-07-27ubuntu
ubuntulinux-image-lowlatency (5.19.0.1023.19) @ kinetic2026-07-27ubuntu
ubuntulinux-modules-5.15.0-1028-ibm (5.15.0-1028.31) @ jammy2026-07-27ubuntu
ubuntulinux-headers-generic-64k-hwe-20.04-edge (5.15.0.70.77~20.04.31) @ focal2026-07-27ubuntu
ubuntulowlatency (5.15.0-25) @ jammy2026-07-27ubuntu
ubuntulinux-tools-oem-22.04b (6.0.0.1015.15) @ jammy2026-07-27ubuntu
ubuntulinux-tools-intel-iotg (5.15.0.1028.27) @ jammy2026-07-27ubuntu
ubuntulinux-oem-22.04a (5.17.0.1031.29) @ jammy2026-07-27ubuntu
redhatkernel-0:5.14.0-70.53.1.el9_02023-04-25redhat
redhatkernel-rt-0:5.14.0-70.53.1.rt21.124.el9_02023-04-25redhat
redhatkpatch-patch2023-04-25redhat
redhatkernel-0:5.14.0-162.23.1.el9_12023-04-11redhat
redhatkernel-rt-0:5.14.0-162.23.1.rt21.186.el9_12023-04-11redhat
redhatredhat-virtualization-host-0:4.5.3-202304051438_8.62023-04-10redhat
redhatkernel-0:4.18.0-372.51.1.el8_62023-04-04redhat
redhatkernel-rt-0:4.18.0-425.19.2.rt7.230.el8_72023-04-04redhat
redhatkernel-0:4.18.0-425.19.2.el8_72023-04-04redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(20)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 73× in last 7d / 412× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 827 total refreshes for this CVE.

  1. 2026-07-27 11:44 UTCVendor advisory
  2. 2026-07-27 11:44 UTCGHSA enrichment
  3. 2026-07-27 07:59 UTCVendor advisory
  4. 2026-07-27 07:59 UTCGHSA enrichment
  5. 2026-07-27 04:14 UTCVendor advisory
  6. 2026-07-27 04:14 UTCGHSA enrichment
  7. 2026-07-27 00:29 UTCVendor advisory
  8. 2026-07-27 00:29 UTCGHSA enrichment
  9. 2026-07-26 20:42 UTCVendor advisory
  10. 2026-07-26 20:42 UTCGHSA enrichment
  11. 2026-07-26 16:58 UTCEG score recompute
  12. 2026-07-26 16:58 UTCVendor advisory
  13. 2026-07-26 16:57 UTCGHSA enrichment
  14. 2026-07-26 14:52 UTCEPSS rescore
  15. 2026-07-26 14:52 UTCEPSS rescore
  16. 2026-07-26 13:14 UTCEG score recompute
  17. 2026-07-26 13:14 UTCVendor advisory
  18. 2026-07-26 13:13 UTCGHSA enrichment
  19. 2026-07-26 09:29 UTCVendor advisory
  20. 2026-07-26 09:28 UTCGHSA enrichment
  21. 2026-07-26 05:44 UTCVendor advisory
  22. 2026-07-26 05:44 UTCGHSA enrichment
  23. 2026-07-26 01:58 UTCEG score recompute
  24. 2026-07-26 01:58 UTCVendor advisory
  25. 2026-07-26 01:57 UTCGHSA enrichment
Show 75 more
  1. 2026-07-25 14:16 UTCEPSS rescore
  2. 2026-07-24 14:15 UTCEPSS rescore
  3. 2026-07-23 14:16 UTCEPSS rescore
  4. 2026-07-23 14:16 UTCEPSS rescore
  5. 2026-07-23 02:17 UTCEG score recompute
  6. 2026-07-22 23:14 UTCVendor advisory
  7. 2026-07-22 23:13 UTCGHSA enrichment
  8. 2026-07-22 23:04 UTCEG score recompute
  9. 2026-07-22 19:40 UTCCISA KEV update
  10. 2026-07-22 19:28 UTCVendor advisory
  11. 2026-07-22 19:28 UTCGHSA enrichment
  12. 2026-07-22 15:44 UTCEG score recompute
  13. 2026-07-22 15:44 UTCVendor advisory
  14. 2026-07-22 15:43 UTCGHSA enrichment
  15. 2026-07-22 14:06 UTCEPSS rescore
  16. 2026-07-22 14:06 UTCEPSS rescore
  17. 2026-07-22 11:57 UTCVendor advisory
  18. 2026-07-22 11:57 UTCGHSA enrichment
  19. 2026-07-22 08:13 UTCVendor advisory
  20. 2026-07-22 08:13 UTCGHSA enrichment
  21. 2026-07-22 04:28 UTCVendor advisory
  22. 2026-07-22 04:28 UTCGHSA enrichment
  23. 2026-07-22 00:43 UTCVendor advisory
  24. 2026-07-22 00:43 UTCGHSA enrichment
  25. 2026-07-21 20:58 UTCVendor advisory
  26. 2026-07-21 20:57 UTCGHSA enrichment
  27. 2026-07-21 17:13 UTCEG score recompute
  28. 2026-07-21 17:13 UTCVendor advisory
  29. 2026-07-21 17:13 UTCGHSA enrichment
  30. 2026-07-21 15:23 UTCEPSS rescore
  31. 2026-07-21 15:23 UTCEPSS rescore
  32. 2026-07-21 14:37 UTCCISA KEV update
  33. 2026-07-21 13:28 UTCVendor advisory
  34. 2026-07-21 13:28 UTCGHSA enrichment
  35. 2026-07-21 09:43 UTCVendor advisory
  36. 2026-07-21 09:43 UTCGHSA enrichment
  37. 2026-07-21 05:57 UTCVendor advisory
  38. 2026-07-21 05:56 UTCGHSA enrichment
  39. 2026-07-21 02:12 UTCVendor advisory
  40. 2026-07-21 02:12 UTCGHSA enrichment
  41. 2026-07-20 22:27 UTCVendor advisory
  42. 2026-07-20 22:27 UTCGHSA enrichment
  43. 2026-07-20 18:43 UTCEG score recompute
  44. 2026-07-20 18:43 UTCVendor advisory
  45. 2026-07-20 18:43 UTCGHSA enrichment
  46. 2026-07-20 17:05 UTCEPSS rescore
  47. 2026-07-20 14:58 UTCVendor advisory
  48. 2026-07-20 14:58 UTCGHSA enrichment
  49. 2026-07-20 11:13 UTCVendor advisory
  50. 2026-07-20 11:13 UTCGHSA enrichment
  51. 2026-07-20 07:28 UTCVendor advisory
  52. 2026-07-20 07:28 UTCGHSA enrichment
  53. 2026-07-20 03:44 UTCVendor advisory
  54. 2026-07-20 03:44 UTCGHSA enrichment
  55. 2026-07-19 23:59 UTCVendor advisory
  56. 2026-07-19 23:59 UTCGHSA enrichment
  57. 2026-07-19 20:15 UTCVendor advisory
  58. 2026-07-19 20:15 UTCGHSA enrichment
  59. 2026-07-19 16:30 UTCEG score recompute
  60. 2026-07-19 16:30 UTCVendor advisory
  61. 2026-07-19 16:30 UTCGHSA enrichment
  62. 2026-07-19 14:29 UTCEPSS rescore
  63. 2026-07-19 14:29 UTCEPSS rescore
  64. 2026-07-19 12:46 UTCVendor advisory
  65. 2026-07-19 12:45 UTCGHSA enrichment
  66. 2026-07-19 09:01 UTCVendor advisory
  67. 2026-07-19 09:01 UTCGHSA enrichment
  68. 2026-07-19 05:16 UTCEG score recompute
  69. 2026-07-19 05:16 UTCVendor advisory
  70. 2026-07-19 05:16 UTCGHSA enrichment
  71. 2026-07-19 02:27 UTCEPSS rescore
  72. 2026-07-19 02:27 UTCEPSS rescore
  73. 2026-07-19 01:31 UTCVendor advisory
  74. 2026-07-19 01:31 UTCGHSA enrichment
  75. 2026-07-18 21:46 UTCVendor advisory

Publicly available exploits

(9 references)

Working exploit code is in the public domain (1 Metasploit module) (8 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCpuckiestyle/CVE-2023-0386
    First seen Dec 23, 2023
    Open source ↗
  • GitHub PoCFanxiaoyao66/CVE-2023-0386
    First seen Jun 28, 2023

    非常简单的CVE-2023-0386's exp and analysis.Use c and sh.

    Open source ↗
  • GitHub PoCsxlmnwb/CVE-2023-0386
    First seen May 16, 2023

    Vulnerabilities Exploitation On Ubuntu 22.04

    Open source ↗
  • GitHub PoCP4x1s/CVE-2023-0386
    First seen May 8, 2023

    CVE-2023-0386 EXP

    Open source ↗
  • GitHub PoCchenaotian/CVE-2023-0386
    First seen May 6, 2023

    CVE-2023-0386 analysis and Exp

    Open source ↗
  • GitHub PoCxkaneiki/CVE-2023-0386
    First seen May 5, 2023

    CVE-2023-0386在ubuntu22.04上的提权

    Open source ↗
  • GitHub PoCSatheesh575555/linux-4.19.72_CVE-2023-0386
    First seen May 4, 2023
    Open source ↗
  • GitHub PoCveritas501/CVE-2023-0386
    First seen Apr 20, 2023
    Open source ↗
  • Metasploitexploit/linux/local/cve_2023_0386_overlayfs_priv_esc✓ verified
    First seen Mar 22, 2023

    Local Privilege Escalation via CVE-2023-0386

    Open source ↗

Frequently asked(6)

What is CVE-2023-0386?
CVE-2023-0386 is a critical vulnerability published on March 22, 2023. 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…
When was CVE-2023-0386 disclosed?
CVE-2023-0386 was first published in the National Vulnerability Database on March 22, 2023, with the most recent update on November 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-0386 actively exploited?
Yes. CISA added CVE-2023-0386 to the Known Exploited Vulnerabilities catalog on June 17, 2025, affecting Linux Kernel. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-0386?
CVE-2023-0386 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2023-0386?
CVE-2023-0386 affects Linux Kernel. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2023-0386?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-0386, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2023-0386

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