Use After Free Affecting kernel-debug-debuginfo package, versions <0:4.18.0-477.27.1.el8_8


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-ROCKY8-KERNELDEBUGDEBUGINFO-5920193
  • published 20 Sep 2023
  • disclosed 28 Jun 2023

How to fix?

Upgrade Rocky-Linux:8 kernel-debug-debuginfo to version 0:4.18.0-477.27.1.el8_8 or higher.
This issue was patched in RLSA-2023:5244.

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.

A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c.

Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue.

We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97.

CVSS Scores

version 3.1
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NVD

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

7.8 high
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Red Hat

7.8 high