CVE-2024-38618 Affecting kernel-uek-devel package, versions <0:4.14.35-2047.540.4.1.el7uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELUEKDEVEL-7678145
  • published14 Aug 2024
  • disclosed19 Jun 2024

Introduced: 19 Jun 2024

CVE-2024-38618  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-uek-devel to version 0:4.14.35-2047.540.4.1.el7uek or higher.
This issue was patched in ELSA-2024-12611.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-devel package and not the kernel-uek-devel package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

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

ALSA: timer: Set lower bound of start tick time

Currently ALSA timer doesn't have the lower limit of the start tick time, and it allows a very small size, e.g. 1 tick with 1ns resolution for hrtimer. Such a situation may lead to an unexpected RCU stall, where the callback repeatedly queuing the expire update, as reported by fuzzer.

This patch introduces a sanity check of the timer start tick time, so that the system returns an error when a too small start size is set. As of this patch, the lower limit is hard-coded to 100us, which is small enough but can still work somehow.

CVSS Scores

version 3.1