Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2024-38629

Severity CVSS v4.0:
Pending analysis
Type:
CWE-416 Use After Free
Publication date:
21/06/2024
Last modified:
03/10/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> dmaengine: idxd: Avoid unnecessary destruction of file_ida<br /> <br /> file_ida is allocated during cdev open and is freed accordingly<br /> during cdev release. This sequence is guaranteed by driver file<br /> operations. Therefore, there is no need to destroy an already empty<br /> file_ida when the WQ cdev is removed.<br /> <br /> Worse, ida_free() in cdev release may happen after destruction of<br /> file_ida per WQ cdev. This can lead to accessing an id in file_ida<br /> after it has been destroyed, resulting in a kernel panic.<br /> <br /> Remove ida_destroy(&amp;file_ida) to address these issues.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.4 (including) 6.6.33 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.9.4 (excluding)

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


References to Advisories, Solutions, and Tools