Use After Free Affecting kernel-uek-core package, versions <0:5.15.0-201.135.6.el8uek


Severity

Recommended
high

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-ORACLE8-KERNELUEKCORE-6126360
  • published 15 Dec 2023
  • disclosed 27 Sep 2023

How to fix?

Upgrade Oracle:8 kernel-uek-core to version 0:5.15.0-201.135.6.el8uek or higher.
This issue was patched in ELSA-2023-13043.

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.

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.

Addition and removal of rules from chain bindings within the same transaction causes leads to use-after-free.

We recommend upgrading past commit f15f29fd4779be8a418b66e9d52979bb6d6c2325.

CVSS Scores

version 3.1
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NVD

6.6 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    High
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SUSE

6.6 medium
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Red Hat

6.6 medium