Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2024-35878

Severity CVSS v4.0:
Pending analysis
Type:
CWE-476 NULL Pointer Dereference
Publication date:
19/05/2024
Last modified:
07/04/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> of: module: prevent NULL pointer dereference in vsnprintf()<br /> <br /> In of_modalias(), we can get passed the str and len parameters which would<br /> cause a kernel oops in vsnprintf() since it only allows passing a NULL ptr<br /> when the length is also 0. Also, we need to filter out the negative values<br /> of the len parameter as these will result in a really huge buffer since<br /> snprintf() takes size_t parameter while ours is ssize_t...<br /> <br /> Found by Linux Verification Center (linuxtesting.org) with the Svace static<br /> analysis tool.

Impact

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

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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

Base Score 3.x
5.30
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.6.26 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.8.5 (excluding)
cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools