Access of Resource Using Incompatible Type ('Type Confusion') Affecting kernel-uek-core package, versions <0:5.15.0-8.91.4.1.el8uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-ORACLE8-KERNELUEKCORE-3364178
  • published18 Mar 2023
  • disclosed12 Jan 2023

Introduced: 12 Jan 2023

CVE-2023-23454  (opens in a new tab)
CWE-843  (opens in a new tab)

How to fix?

Upgrade Oracle:8 kernel-uek-core to version 0:5.15.0-8.91.4.1.el8uek or higher.
This issue was patched in ELSA-2023-12196.

NVD Description

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

cbq_classify in net/sched/sch_cbq.c in the Linux kernel through 6.1.4 allows attackers to cause a denial of service (slab-out-of-bounds read) because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition rather than valid classification results).

CVSS Scores

version 3.1