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PatchSiren cyber security CVE debrief

CVE-2016-5195 Linux CVE debrief

CVE-2016-5195 is a Linux Kernel race condition vulnerability that CISA lists in its Known Exploited Vulnerabilities catalog, which means it is known to have been exploited in the wild. Because CISA assigned a remediation due date and directed organizations to apply vendor updates, this issue should be treated as a high-priority patching item for any Linux systems that may be affected.

Vendor
Linux
Product
Kernel
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-03-03
Original CVE updated
2022-03-03
Advisory published
2022-03-03
Advisory updated
2022-03-03

Who should care

Security, platform, and operations teams responsible for Linux-based servers, endpoints, appliances, containers, and any other systems running the Linux kernel should prioritize this advisory, especially where patch windows are tightly controlled or systems are externally exposed.

Technical summary

The vulnerability is identified by CISA as a Linux Kernel race condition issue. The provided source corpus does not include deeper technical mechanics, so the safest defensible summary is that a race condition in the kernel was sufficiently impactful to be included in CISA’s KEV catalog. CISA’s entry directs affected organizations to apply updates per vendor instructions.

Defensive priority

High. CISA’s KEV listing indicates known exploitation, and the catalog includes a remediation due date of 2022-03-24. Even without a CVSS score in the provided data, KEV status makes this a time-sensitive patching and verification item.

Recommended defensive actions

  • Identify Linux systems using affected kernel versions or vendor distributions that may carry the issue.
  • Apply vendor-provided kernel updates or mitigations as instructed by the system vendor.
  • Prioritize internet-facing, production, and high-value systems for remediation first.
  • Verify patch deployment and confirm affected hosts are no longer on vulnerable kernel builds.
  • Track exceptions with documented risk acceptance only when immediate patching is not possible.

Evidence notes

The supplied CISA KEV source item names the issue as "Linux Kernel Race Condition Vulnerability," marks it as a known exploited vulnerability, lists vendorProject "Linux" and product "Kernel," and records dateAdded 2022-03-03 with dueDate 2022-03-24. The source item also states the required action: "Apply updates per vendor instructions." The knownRansomwareCampaignUse field is "Unknown." Official reference links supplied with the record point to the CVE record, NVD detail page, and CISA KEV catalog.

Sources and references

Verified primary and authoritative sources

  • CVE-2016-5195 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2016-5195

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2016-5195 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2016-5195

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.