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PatchSiren cyber security CVE debrief

CVE-2023-0386 Linux CVE debrief

CVE-2023-0386 is a Linux kernel vulnerability described as an improper ownership management issue. CISA added it to the Known Exploited Vulnerabilities catalog on 2025-06-17, which means it is considered known to be exploited and should be prioritized for remediation. The supplied corpus does not include deeper technical detail, so this debrief stays at a high level and focuses on defensive response.

Vendor
Linux
Product
Kernel
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2025-06-17
Original CVE updated
2025-06-17
Advisory published
2025-06-17
Advisory updated
2025-06-17

Who should care

Linux administrators, distro and appliance maintainers, cloud and container platform operators, and security teams responsible for systems that run affected Linux kernel builds or derivatives.

Technical summary

The available official records identify CVE-2023-0386 as a Linux Kernel improper ownership management vulnerability. The most important operational fact in the supplied corpus is CISA KEV inclusion on 2025-06-17, with a due date of 2025-07-08, indicating that remediation was expected quickly for affected environments. The source metadata also points to vendor advisories and an upstream Linux kernel commit for more detailed mitigation guidance.

Defensive priority

Urgent

Recommended defensive actions

  • Identify whether any deployed Linux kernels or downstream distributions map to this CVE using vendor advisories and asset inventory.
  • Apply vendor-provided kernel updates or mitigations as soon as possible.
  • If a mitigation is not available, isolate, restrict, or discontinue use of the affected system in line with CISA KEV guidance.
  • For cloud services, follow applicable BOD 22-01 guidance and coordinate with your provider if the kernel is managed by them.
  • Validate remediation across all variants, including embedded, appliance, and container-host platforms that may inherit the affected kernel.
  • Track exposure until all affected instances are upgraded or otherwise remediated.

Evidence notes

The supplied source item is the CISA KEV feed entry for CVE-2023-0386 and records: vendorProject=Linux, product=Kernel, vulnerabilityName=Linux Kernel Improper Ownership Management Vulnerability, dateAdded=2025-06-17, dueDate=2025-07-08, and knownRansomwareCampaignUse=Unknown. The source metadata references the upstream Linux kernel commit and vendor advisories (Red Hat and NetApp) as supporting references. No CVSS score or detailed exploit mechanics were present in the supplied corpus.

Official resources

Public debrief based on the supplied CISA KEV record and linked official references. The corpus provided limited technical detail, so the summary avoids unsupported exploitation or impact claims.