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cvelistMitreCVELIST:CVE-2019-13272
HistoryJul 17, 2019 - 12:32 p.m.

CVE-2019-13272

2019-07-1712:32:55
mitre
www.cve.org

7.8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

20.3%

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) Polkitโ€™s pkexec helper with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.

References