Integer Underflow Affecting kernel-rt-core package, versions <0:4.18.0-513.24.1.rt7.326.el8_9


Severity

Recommended
high

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.05% (19th percentile)

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  • Snyk ID SNYK-CENTOS8-KERNELRTCORE-6159122
  • published 16 Jan 2024
  • disclosed 18 Dec 2023

How to fix?

Upgrade Centos:8 kernel-rt-core to version 0:4.18.0-513.24.1.rt7.326.el8_9 or higher.

NVD Description

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

An out-of-bounds memory read flaw was found in receive_encrypted_standard in fs/smb/client/smb2ops.c in the SMB Client sub-component in the Linux Kernel. This issue occurs due to integer underflow on the memcpy length, leading to a denial of service.

CVSS Scores

version 3.1
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NVD

7.4 high
  • Attack Vector (AV)
    Adjacent
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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Red Hat

6.8 medium
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SUSE

7.5 high