CVE-2024-38618

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

19/06/2024

Last modified:

04/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: timer: Set lower bound of start tick time Currently ALSA timer doesn&#39;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.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::		4.19.316 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.278 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.219 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.161 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.93 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.33 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.9.3 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2024-38618

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools