Improper Initialization Affecting kernel-cross-headers package, versions <0:4.18.0-240.1.1.el8_3


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.28% (69th percentile)

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  • Snyk ID SNYK-RHEL8-KERNELCROSSHEADERS-1456603
  • published 26 Jul 2021
  • disclosed 3 Nov 2020

How to fix?

Upgrade RHEL:8 kernel-cross-headers to version 0:4.18.0-240.1.1.el8_3 or higher.
This issue was patched in RHSA-2020:4685.

NVD Description

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

A Red Hat only CVE-2020-12352 regression issue was found in the way the Linux kernel's Bluetooth stack implementation handled the initialization of stack memory when handling certain AMP packets. This flaw allows a remote attacker in an adjacent range to leak small portions of stack memory on the system by sending specially crafted AMP packets. The highest threat from this vulnerability is to data confidentiality.

CVSS Scores

version 3.1
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NVD

6.5 medium
  • Attack Vector (AV)
    Adjacent
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    None
  • Availability (A)
    None
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Red Hat

5.3 medium