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PatchSiren cyber security CVE debrief

CVE-2019-13272 Linux CVE debrief

CVE-2019-13272 is a Linux kernel improper privilege management vulnerability that CISA added to its Known Exploited Vulnerabilities catalog. Because it is flagged as known exploited, defenders should treat remediation as urgent and follow vendor update guidance without delay. The supplied corpus does not include version ranges or exploit details, so the safest response is broad inventory, rapid patching, and confirmation that all Linux hosts are updated.

Vendor
Linux
Product
Kernel
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2021-12-10
Original CVE updated
2021-12-10
Advisory published
2021-12-10
Advisory updated
2021-12-10

Who should care

Linux administrators, distribution maintainers, cloud and virtualization operators, endpoint/security teams, and anyone responsible for Linux hosts that may be exposed to known-exploited kernel flaws.

Technical summary

The supplied sources identify this as a Linux Kernel improper privilege management issue and list it in the CISA KEV catalog, which indicates known exploitation. No further technical detail, affected version range, or exploitation mechanics are provided in the corpus, so remediation should focus on applying vendor-provided kernel updates and verifying coverage across all Linux systems.

Defensive priority

Urgent — CISA KEV-listed vulnerabilities should be patched as soon as possible, with priority given to exposed and high-value Linux systems.

Recommended defensive actions

  • Apply updates per vendor instructions as soon as possible.
  • Inventory all Linux systems and confirm which kernel packages are in use.
  • Prioritize internet-facing, privileged, and high-impact hosts for remediation.
  • Verify patch deployment and reboot requirements where kernel updates need them.
  • Use compensating controls if immediate patching is not possible, and document any temporary risk acceptance.
  • Track CISA KEV and vendor advisories until all affected systems are confirmed remediated.

Evidence notes

This debrief is based on the supplied CISA KEV source item and the official CVE/NVD links. The corpus states: vendorProject Linux, product Kernel, vulnerabilityName 'Linux Kernel Improper Privilege Management Vulnerability', dateAdded 2021-12-10, dueDate 2022-06-10, and requiredAction 'Apply updates per vendor instructions.' No version range, exploit chain, or ransomware attribution is provided in the supplied corpus. The dates in this record are used as the authoritative timeline context for the KEV entry.

Official resources

Publicly disclosed and listed in CISA KEV; known exploited. Known ransomware campaign use is recorded as Unknown in the supplied corpus.