Use After Free Affecting kernel-tools-devel package, versions <0:4.14.294-220.533.amzn2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    0.05% (24th percentile)

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  • Snyk ID SNYK-AMZN2-KERNELTOOLSDEVEL-3042739
  • published 12 Oct 2022
  • disclosed 8 Jan 2024

How to fix?

Upgrade Amazon-Linux:2 kernel-tools-devel to version 0:4.14.294-220.533.amzn2 or higher.
This issue was patched in ALAS2-2022-1852.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-tools-devel package and not the kernel-tools-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the hashtable before freeing it if its handle had the value 0.

CVSS Scores

version 3.1
Expand this section

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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Red Hat

7.8 high
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SUSE

7.8 high