Race Condition Affecting kernel-rt-debug-core package, versions <0:4.18.0-193.64.1.rt13.115.el8_2


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELRTDEBUGCORE-3972128
  • published26 Jul 2021
  • disclosed19 Jun 2021

Introduced: 19 Jun 2021

CVE-2021-3609  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-rt-debug-core to version 0:4.18.0-193.64.1.rt13.115.el8_2 or higher.
This issue was patched in RHSA-2021:3375.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-core package and not the kernel-rt-debug-core package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

.A flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse a flaw in the CAN subsystem to corrupt memory, crash the system or escalate privileges. This race condition in net/can/bcm.c in the Linux kernel allows for local privilege escalation to root.

CVSS Scores

version 3.1