Deadlock Affecting kernel-rt package, versions <0:3.10.0-327.rt56.204.el7


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-RHEL7-KERNELRT-1440025
  • published 26 Jul 2021
  • disclosed 21 Apr 2015

How to fix?

Upgrade RHEL:7 kernel-rt to version 0:3.10.0-327.rt56.204.el7 or higher.
This issue was patched in RHSA-2015:2411.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt package and not the kernel-rt package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The memory resource controller (aka memcg) in the Linux kernel allows local users to cause a denial of service (deadlock) by spawning new processes within a memory-constrained cgroup.

CVSS Scores

version 3.1
Expand this section

Red Hat

5.7 medium
  • Attack Vector (AV)
    Adjacent
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High