Improper Resource Locking Affecting kernel-tools package, versions <0:4.18.0-553.22.1.el8_10


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.05% (17th percentile)

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  • Snyk ID SNYK-RHEL8-KERNELTOOLS-7186467
  • published 3 Jun 2024
  • disclosed 30 May 2024

How to fix?

Upgrade RHEL:8 kernel-tools to version 0:4.18.0-553.22.1.el8_10 or higher.
This issue was patched in RHSA-2024:7000.

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 RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

wifi: iwlwifi: read txq->read_ptr under lock

If we read txq->read_ptr without lock, we can read the same value twice, then obtain the lock, and reclaim from there to two different places, but crucially reclaim the same entry twice, resulting in the WARN_ONCE() a little later. Fix that by reading txq->read_ptr under lock.

CVSS Scores

version 3.1
Expand this section

Red Hat

4.4 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    High
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
Expand this section

SUSE

4.7 medium