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NVD / CVE Program· CNA redhat

CVE-2023-0386: 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

Noroxi assessment

Priority: This week (action score 63/100)

  • CISA has confirmed exploitation in the wild (Jun 17, 2025). Remediation deadline for US federal agencies: Jul 8, 2025.
  • A ready-made attack module is public (Metasploit); exploiting it takes no special expertise.
  • Probability of exploitation in the next 30 days: 7.8% (FIRST EPSS); higher than 94.7% of all records.
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: CBL Mariner 1.0 ARM 5.10.185.1-1, 5.10.188.1-1; CBL Mariner 1.0 x64 5.10.185.1-1, 5.10.188.1-1; CBL Mariner 2.0 ARM 5.15.107.1-2.
  • Mentioned 3 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Don’t wait for the next maintenance window. Upgrade to CBL Mariner 1.0 ARM 5.10.185.1-1, 5.10.188.1-1; CBL Mariner 1.0 x64 5.10.185.1-1, 5.10.188.1-1; CBL Mariner 2.0 ARM 5.15.107.1-2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

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.

HighCVSS 7.8 · v3.1KEVWeaponized Fix available
Published
Mar 22, 2023
Updated
Jun 17, 2026
EPSS
7.8% · 94th percentile

Report tools

JSON

Action score

63

This week

Don’t wait for the next maintenance window.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
30 / 30 · Listed
EPSS
2 / 30 · 7.8%

CISA SSVC decision

Exploitation
active
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Jun 17, 2025. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Jul 8, 2025.

Get told when this record changes

  • In CISA KEV: exploitation in the wild confirmed
  • Weaponized exploit exists
  • A fix has been released

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel
debiandebian linux
netapph300s firmware
netapph300s
netapph500s firmware
netapph500s
netapph700s firmware
netapph700s
netapph410s firmware
netapph410s
netapph410c firmware
netapph410c

and 1 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • canonical ubuntu linux18.04
  • canonical ubuntu linux20.04
  • canonical ubuntu linux22.04
  • debian debian linux10.0
  • linux linux kernel5.11 and later · before 5.15.91
  • linux linux kernel5.16 and later · before 6.1.9
  • linux linux kernel6.2
  • netapp h300s firmwareall versions
  • netapp h410c firmwareall versions
  • netapp h410s firmwareall versions
  • netapp h500s firmwareall versions
  • netapp h700s firmwareall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a Kernel

    • Linux kernel 6.2-rc6affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8bpftoolbefore 4.18.0-425.19.2.el8_74.18.0-425.19.2.el8_7
AlmaLinux:8kernelbefore 4.18.0-425.19.2.el8_74.18.0-425.19.2.el8_7
AlmaLinux:8kernel-abi-stablelistsbefore 4.18.0-425.19.2.el8_74.18.0-425.19.2.el8_7
AlmaLinux:8kernel-corebefore 4.18.0-425.19.2.el8_74.18.0-425.19.2.el8_7
AlmaLinux:8kernel-cross-headersbefore 4.18.0-425.19.2.el8_74.18.0-425.19.2.el8_7
AlmaLinux:8kernel-debugbefore 4.18.0-425.19.2.el8_74.18.0-425.19.2.el8_7
AlmaLinux:8kernel-debug-corebefore 4.18.0-425.19.2.el8_74.18.0-425.19.2.el8_7
AlmaLinux:8kernel-debug-develbefore 4.18.0-425.19.2.el8_74.18.0-425.19.2.el8_7
AlmaLinux:8kernel-debug-modulesbefore 4.18.0-425.19.2.el8_74.18.0-425.19.2.el8_7
AlmaLinux:8kernel-debug-modules-extrabefore 4.18.0-425.19.2.el8_74.18.0-425.19.2.el8_7
AlmaLinux:8kernel-develbefore 4.18.0-425.19.2.el8_74.18.0-425.19.2.el8_7
AlmaLinux:8kernel-docbefore 4.18.0-425.19.2.el8_74.18.0-425.19.2.el8_7
AlmaLinux:8kernel-modulesbefore 4.18.0-425.19.2.el8_74.18.0-425.19.2.el8_7
AlmaLinux:8kernel-modules-extrabefore 4.18.0-425.19.2.el8_74.18.0-425.19.2.el8_7
AlmaLinux:8kernel-rtbefore 4.18.0-425.19.2.rt7.230.el8_74.18.0-425.19.2.rt7.230.el8_7
AlmaLinux:8kernel-rt-corebefore 4.18.0-425.19.2.rt7.230.el8_74.18.0-425.19.2.rt7.230.el8_7
AlmaLinux:8kernel-rt-debugbefore 4.18.0-425.19.2.rt7.230.el8_74.18.0-425.19.2.rt7.230.el8_7
AlmaLinux:8kernel-rt-debug-corebefore 4.18.0-425.19.2.rt7.230.el8_74.18.0-425.19.2.rt7.230.el8_7
AlmaLinux:8kernel-rt-debug-develbefore 4.18.0-425.19.2.rt7.230.el8_74.18.0-425.19.2.rt7.230.el8_7
AlmaLinux:8kernel-rt-debug-kvmbefore 4.18.0-425.19.2.rt7.230.el8_74.18.0-425.19.2.rt7.230.el8_7
AlmaLinux:8kernel-rt-debug-modulesbefore 4.18.0-425.19.2.rt7.230.el8_74.18.0-425.19.2.rt7.230.el8_7
AlmaLinux:8kernel-rt-debug-modules-extrabefore 4.18.0-425.19.2.rt7.230.el8_74.18.0-425.19.2.rt7.230.el8_7
AlmaLinux:8kernel-rt-develbefore 4.18.0-425.19.2.rt7.230.el8_74.18.0-425.19.2.rt7.230.el8_7
AlmaLinux:8kernel-rt-kvmbefore 4.18.0-425.19.2.rt7.230.el8_74.18.0-425.19.2.rt7.230.el8_7

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2023-1281Mar 22, 2023 · UAF in Linux kernel's tcindex (traffic control index filter) implementation
    31Monitor
  • ← EarlierCVE-2022-4095Mar 22, 2023 · A use-after-free flaw was found in Linux kernel before 5.19.2.
    31Monitor
  • Later →CVE-2023-28772Mar 23, 2023 · An issue was discovered in the Linux kernel before 5.13.3.
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
CBL Mariner 1.0 ARM5.10.185.1-1 · kernelMicrosoft (MSRC)
CBL Mariner 1.0 ARM5.10.188.1-1 · hyperv-daemonsMicrosoft (MSRC)
CBL Mariner 1.0 x645.10.185.1-1 · kernelMicrosoft (MSRC)
CBL Mariner 1.0 x645.10.188.1-1 · hyperv-daemonsMicrosoft (MSRC)
CBL Mariner 2.0 ARM5.15.107.1-2 · kernelMicrosoft (MSRC)
CBL Mariner 2.0 x645.15.107.1-2 · kernelMicrosoft (MSRC)
almalinux:bpftool4.18.0-425.19.2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:kernel4.18.0-425.19.2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-abi-stablelists4.18.0-425.19.2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-core4.18.0-425.19.2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-cross-headers4.18.0-425.19.2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug4.18.0-425.19.2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug-core4.18.0-425.19.2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug-devel4.18.0-425.19.2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug-modules4.18.0-425.19.2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug-modules-extra4.18.0-425.19.2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-devel4.18.0-425.19.2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-doc4.18.0-425.19.2.el8_7 · AlmaLinux:8Package registry (OSV)
debian:linux6.1.11-1 · Debian:12Package registry (OSV)
debian:linux-5.105.10.179-1~deb10u1 · Debian:10Package registry (OSV)
opensuse:dtb-aarch645.14.21-150400.24.63.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-64kb5.14.21-150400.24.63.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-debug5.14.21-150400.24.63.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-default5.14.21-150400.24.63.1 · openSUSE:Leap Micro 5.3Package registry (OSV)
opensuse:kernel-default-base5.14.21-150400.24.63.1.150400.24.27.1 · openSUSE:Leap Micro 5.3Package registry (OSV)
opensuse:kernel-docs5.14.21-150400.24.63.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-kvmsmall5.14.21-150400.24.63.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-obs-build5.14.21-150400.24.63.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-obs-qa5.14.21-150400.24.63.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:kernel-source5.14.21-150400.24.63.1 · openSUSE:Leap 15.4Package registry (OSV)

+28

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Metasploit module ×1
  • Proof-of-concept repository on GitHub ×18

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Metasploit moduleexploit/linux/local/cve_2023_0386_overlayfs_priv_escLocal Privilege Escalation via CVE-2023-0386exploit2023-03-22
Proof-of-concept repository on GitHubstars:102023-04-20
Proof-of-concept repository on GitHubstars:42023-05-04
Proof-of-concept repository on GitHubstars:4162023-05-05
Proof-of-concept repository on GitHubstars:1222023-05-06
Proof-of-concept repository on GitHubstars:42023-05-08
Proof-of-concept repository on GitHubstars:572023-05-16
Proof-of-concept repository on GitHubstars:212023-06-28
Proof-of-concept repository on GitHubstars:222023-12-23
Proof-of-concept repository on GitHubstars:02024-02-29
Proof-of-concept repository on GitHubstars:02024-04-05
Proof-of-concept repository on GitHubstars:02024-04-22

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Metasploit-1 d
  2. Published
  3. First PoC+28 d
  4. CISA KEV+817 d
  5. TodayNov 4, 2026+1323 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-282 · Improper Ownership Management

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records