Use After Free Affecting kernel-rt package, versions <0:4.18.0-513.9.1.rt7.311.el8_9


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.01% (1st percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELRT-6102249
  • published7 Dec 2023
  • disclosed24 Jul 2023

Introduced: 24 Jul 2023

CVE-2023-3812  (opens in a new tab)
CWE-416  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-rt to version 0:4.18.0-513.9.1.rt7.311.el8_9 or higher.
This issue was patched in RLSA-2023:7548.

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 Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.

CVSS Base Scores

version 3.1