kbrain

CVE-2019-13272

HIGH · CVSS 7.8CISA KEV: actively exploitedEPSS 52.2%EU EUVD: exploited

In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.

Key facts

CVSS score
7.8 (v3.1)
Severity
HIGH
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS score
52.2% (99th percentile)
In CISA KEV
Yes, added December 10, 2021
In EU EUVD
Yes (EUVD-2019-4779)
Published
July 17, 2019
NVD last modified
June 17, 2026
Status
Analyzed

CISA Known Exploited Vulnerability

Linux Kernel Improper Privilege Management Vulnerability

Added to the KEV catalog on December 10, 2021; federal remediation due June 10, 2022.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2019-4779 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on October 21, 2025.

View on the EU Vulnerability Database

Affected products

  • canonical / ubuntu linux
  • canonical / ubuntu linux
  • canonical / ubuntu linux
  • debian / debian linux
  • debian / debian linux
  • debian / debian linux
  • fedoraproject / fedora
  • linux / linux kernel
  • netapp / active iq unified manager
  • netapp / aff a700s
  • netapp / aff a700s firmware
  • netapp / e-series performance analyzer
  • netapp / e-series santricity os controller
  • netapp / h410c
  • netapp / h410c firmware
  • netapp / h610s
  • netapp / h610s firmware
  • netapp / hci compute node
  • netapp / hci management node
  • netapp / service processor
  • netapp / solidfire
  • netapp / steelstore cloud integrated storage
  • redhat / enterprise linux
  • redhat / enterprise linux
  • redhat / enterprise linux for arm 64
  • redhat / enterprise linux for ibm z systems
  • redhat / enterprise linux for real time
  • redhat / enterprise linux for real time for nfv
  • redhat / enterprise linux for real time for nfv tus
  • redhat / enterprise linux for real time for nfv tus
  • redhat / enterprise linux for real time for nfv tus
  • redhat / enterprise linux for real time for nfv tus
  • redhat / enterprise linux for real time tus
  • redhat / enterprise linux for real time tus
  • redhat / enterprise linux for real time tus
  • redhat / enterprise linux for real time tus

Certified products that may be affected

25 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

See all 25 in the Security Certifications Explorer.

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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