CVE-2024-43854

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

17/08/2024

Last modified:

03/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: block: initialize integrity buffer to zero before writing it to media Metadata added by bio_integrity_prep is using plain kmalloc, which leads to random kernel memory being written media. For PI metadata this is limited to the app tag that isn&#39;t used by kernel generated metadata, but for non-PI metadata the entire buffer leaks kernel memory. Fix this by adding the __GFP_ZERO flag to allocations for writes.

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::::::::	2.6.27 (including)	5.15.165 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.103 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.44 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.10.3 (excluding)

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

CVE-2024-43854

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools