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PatchSiren cyber security CVE debrief

CVE-2013-2596 Linux CVE debrief

CVE-2013-2596 is a Linux kernel integer overflow vulnerability that CISA has listed in its Known Exploited Vulnerabilities catalog. For defenders, the key takeaway is not the missing CVSS score in the supplied record, but the fact that CISA flagged this issue for remediation and set a due date of 2022-10-06 in the provided KEV metadata. The source notes point to a Linux kernel git commit as the vendor fix reference, so the safest response is to verify whether any Linux kernel systems in your environment are still exposed and apply vendor-recommended updates.

Vendor
Linux
Product
Kernel
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-09-15
Original CVE updated
2022-09-15
Advisory published
2022-09-15
Advisory updated
2022-09-15

Who should care

Organizations that run Linux kernel-based systems, especially teams responsible for server fleets, embedded devices, appliances, cloud images, and security patching operations. Asset owners should care most if they manage systems that cannot be easily rebooted or updated on a tight cadence.

Technical summary

The supplied record describes an integer overflow condition in the Linux kernel. Beyond that, the provided corpus does not include affected subsystems, versions, or exploit mechanics. CISA’s KEV entry indicates the issue is known to have been exploited and directs defenders to apply updates per vendor instructions. The metadata also references a Linux kernel commit URL as the vendor-side fix pointer.

Defensive priority

High. CISA’s KEV inclusion means this should be treated as a remediation priority rather than a routine advisory, particularly on internet-facing or broadly deployed Linux systems.

Recommended defensive actions

  • Confirm whether your Linux kernel versions are affected using vendor advisories and package management records.
  • Apply the vendor-recommended kernel updates or backported fixes as soon as practical.
  • Prioritize internet-facing servers, shared infrastructure, and systems with elevated privileges or long uptime windows.
  • Verify remediation across physical, virtual, and container host images, not just running workloads.
  • Track patch status against the KEV due date context in the provided metadata (2022-10-06) and document any exceptions.
  • Monitor for vendor kernel release notes and confirm the referenced fix is present in your distribution’s package stream.

Evidence notes

This debrief is based only on the supplied CVE/KEV corpus and official links. The provided metadata identifies CVE-2013-2596 as a Linux kernel integer overflow vulnerability and marks it as CISA KEV-listed with dateAdded 2022-09-15 and dueDate 2022-10-06. The source notes include a Linux kernel git commit URL (fc9bbca8f650e5f738af8806317c0a041a48ae4a) and an NVD link, but the corpus does not provide affected versions, exploit details, or CVSS scoring.

Official resources

CISA KEV-listed vulnerability. The supplied record shows publication/modified dates of 2022-09-15 for the KEV source metadata; the CVE identifier itself is CVE-2013-2596.