PatchSiren

PatchSiren cyber security CVE debrief

CVE-2022-2586 Linux CVE debrief

CVE-2022-2586 is a Linux Kernel use-after-free vulnerability that CISA added to its Known Exploited Vulnerabilities (KEV) catalog on 2024-06-26, with remediation due by 2024-07-17. Because it is on the KEV list, defenders should treat it as a priority patching item and follow vendor guidance promptly. CISA’s notes also indicate this affects a common open-source component used by different products, so downstream distributions and products that bundle the Linux kernel may need attention as well.

Vendor
Linux
Product
Kernel
CVSS
MEDIUM 5.3
CISA KEV
Listed
Original CVE published
2024-06-26
Original CVE updated
2024-06-26
Advisory published
2024-06-26
Advisory updated
2024-06-26

Who should care

Linux distribution maintainers, kernel consumers, cloud and container platform teams, embedded/device owners, and security teams responsible for systems running Linux-based products should review this advisory immediately, especially where timely kernel updates are operationally difficult.

Technical summary

The available official corpus identifies the issue as a use-after-free in the Linux Kernel, but does not provide deeper technical detail in the supplied materials. CISA’s KEV entry marks it as a known exploited vulnerability and instructs organizations to apply updates per vendor instructions or discontinue use if updates are unavailable.

Defensive priority

High / urgent. The KEV designation and CISA remediation deadline indicate this should be prioritized for patching, compensating controls, or product retirement where updates cannot be applied.

Recommended defensive actions

  • Inventory Linux kernel versions across servers, endpoints, appliances, containers, and embedded systems.
  • Apply vendor-provided kernel updates or mitigations as soon as possible.
  • If a product cannot be updated, follow CISA guidance and discontinue use of the affected product until a fix is available.
  • Verify downstream vendors and distribution maintainers for backported fixes, since this is an open-source component used by multiple products.
  • Track exposure against the CISA KEV due date and confirm remediation status in change-management records.

Evidence notes

This debrief is based only on the supplied official sources: the CISA KEV JSON feed entry for CVE-2022-2586, the CISA KEV catalog, the CVE record, and the NVD detail page. The source metadata states the vulnerability is a Linux Kernel use-after-free issue, was added to KEV on 2024-06-26, has a due date of 2024-07-17, and recommends applying updates per vendor instructions or discontinuing use if updates are unavailable. No additional technical exploitation details were supplied, so none are inferred here.

Sources and references

Verified primary and authoritative sources

  • CVE-2022-2586 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2022-2586

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

  • CVE-2022-2586 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2022-2586

    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.