Double Free Affecting bpftool package, versions <0:4.18.0-348.el8


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-RHEL8-BPFTOOL-4121934
  • published26 Jul 2021
  • disclosed25 May 2021

Introduced: 25 May 2021

CVE-2021-3564  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade RHEL:8 bpftool to version 0:4.18.0-348.el8 or higher.
This issue was patched in RHSA-2021:4356.

NVD Description

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

A flaw double-free memory corruption in the Linux kernel HCI device initialization subsystem was found in the way user attach malicious HCI TTY Bluetooth device. A local user could use this flaw to crash the system. This flaw affects all the Linux kernel versions starting from 3.13.

CVSS Scores

version 3.1