Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2024-38574

Severity CVSS v4.0:
Pending analysis
Type:
CWE-476 NULL Pointer Dereference
Publication date:
19/06/2024
Last modified:
31/01/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> libbpf: Prevent null-pointer dereference when prog to load has no BTF<br /> <br /> In bpf_objec_load_prog(), there&amp;#39;s no guarantee that obj-&gt;btf is non-NULL<br /> when passing it to btf__fd(), and this function does not perform any<br /> check before dereferencing its argument (as bpf_object__btf_fd() used to<br /> do). As a consequence, we get segmentation fault errors in bpftool (for<br /> example) when trying to load programs that come without BTF information.<br /> <br /> v2: Keep btf__fd() in the fix instead of reverting to bpf_object__btf_fd().

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:*:*:*:*:*:*:*:* 6.8 (including) 6.8.12 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.9 (including) 6.9.3 (excluding)

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


References to Advisories, Solutions, and Tools