CVE-2019-13272 Affecting kernel-livepatch-4_12_14-197_4-default package, versions <7-2.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
0.32% (70th percentile)

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  • Snyk IDSNYK-SLES151-KERNELLIVEPATCH412141974DEFAULT-2722153
  • published14 Apr 2022
  • disclosed11 Dec 2019

Introduced: 11 Dec 2019

CVE-2019-13272  (opens in a new tab)

How to fix?

Upgrade SLES:15.1 kernel-livepatch-4_12_14-197_4-default to version 7-2.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-4_12_14-197_4-default package and not the kernel-livepatch-4_12_14-197_4-default package as distributed by SLES. See How to fix? for SLES:15.1 relevant fixed versions and status.

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.

References

CVSS Scores

version 3.1