Use After Free Affecting kernel-debug-debuginfo package, versions <0:4.18.0-305.7.1.el8_4


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.07% (35th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELDEBUGDEBUGINFO-3288304
  • published3 Feb 2023
  • disclosed14 May 2021

Introduced: 14 May 2021

CVE-2021-33034  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-debug-debuginfo to version 0:4.18.0-305.7.1.el8_4 or higher.
This issue was patched in RLSA-2021:2570.

NVD Description

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

In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value.

CVSS Scores

version 3.1