Incorrect Conversion between Numeric Types Affecting kernel-tools package, versions <0:4.18.0-425.3.1.el8


Severity

Recommended
medium

Based on Rocky Linux security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-ROCKY8-KERNELTOOLS-3193198
  • published 5 Jan 2023
  • disclosed 1 Sep 2022

How to fix?

Upgrade Rocky-Linux:8 kernel-tools to version 0:4.18.0-425.3.1.el8 or higher.
This issue was patched in RLSA-2022:7683.

NVD Description

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

An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of actions, while copying and reserving memory for a new action of a new flow, the reserve_sfa_size() function does not return -EMSGSIZE as expected, potentially leading to an out-of-bounds write access. This flaw allows a local user to crash or potentially escalate their privileges on the system.

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

6.1 medium
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Red Hat

7.8 high