CVEvulnerability

CVE-2019-13272

7.8 HIGH Known exploited Published 2019-07-17 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Linux Kernel Improper Privilege Management Vulnerability — Linux Kernel

Kernel/ptrace.c in Linux kernel mishandles contains an improper privilege management vulnerability that allows local users to obtain root access.

Added to KEV
2021-12-10
Remediation due
2022-06-10
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2019-13272
Status
Analyzed
Published
2019-07-17
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C

Description

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.

Affected configurations

• linux linux kernel (>= 3.16.52 < 3.16.71) • linux linux kernel (>= 4.1.39 < 4.2) • linux linux kernel (>= 4.4.40 < 4.4.185) • linux linux kernel (>= 4.8.16 < 4.9) • linux linux kernel (>= 4.9.1 < 4.9.185) • linux linux kernel (>= 4.10 < 4.14.133) • linux linux kernel (>= 4.15 < 4.19.58) • linux linux kernel (>= 4.20 < 5.1.17) • debian debian linux 8.0 • debian debian linux 9.0 • debian debian linux 10.0 • fedoraproject fedora 29 • canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04 • canonical ubuntu linux 19.04 • redhat enterprise linux 7.0 • redhat enterprise linux 8.0 • redhat enterprise linux for arm 64 7.0 aarch64 • redhat enterprise linux for ibm z systems 7.0 s390x • redhat enterprise linux for real time 8 • redhat enterprise linux for real time for nfv 8.0 • redhat enterprise linux for real time for nfv tus 8.2 • redhat enterprise linux for real time for nfv tus 8.4 • redhat enterprise linux for real time for nfv tus 8.6 • redhat enterprise linux for real time for nfv tus 8.8 • redhat enterprise linux for real time tus 8.2 • redhat enterprise linux for real time tus 8.4 • redhat enterprise linux for real time tus 8.6 • redhat enterprise linux for real time tus 8.8 • netapp aff a700s firmware • netapp h410c firmware • netapp h610s firmware • netapp active iq unified manager • netapp e-series performance analyzer • netapp e-series santricity os controller (>= 11.0.0 <= 11.60.3) • netapp hci management node • netapp service processor • netapp solidfire • netapp steelstore cloud integrated storage • netapp hci compute node

References