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CVE-2019-13272Linux Kernel Improper Privilege Management Vulnerability

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.

7.8 HIGHEPSS 52.19%⚡ Known Exploited (CISA KEV)NVD: Analyzed

OverviewAffected ProductsReferences
NVD CVE.org

Overview

Severity

ScoreSeverityVersionVector String
7.8HIGH3.1NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2HIGH2.0NVDAV:L/AC:L/Au:N/C:C/I:C/A:C

CISA required action

⚡ Known exploited · remediation due Jun 10, 2022

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Details

CVE ID
CVE-2019-13272
Status
Analyzed
Assigner (CNA)
mitre
Published
Jul 17, 2019
Last modified
2026-06-17 02:16 UTC
Weaknesses

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-09 12:15 UTC.