Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2024-41055

Severity CVSS v4.0:
Pending analysis
Type:
CWE-476 NULL Pointer Dereference
Publication date:
29/07/2024
Last modified:
22/08/2024

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> mm: prevent derefencing NULL ptr in pfn_section_valid()<br /> <br /> Commit 5ec8e8ea8b77 ("mm/sparsemem: fix race in accessing<br /> memory_section-&gt;usage") changed pfn_section_valid() to add a READ_ONCE()<br /> call around "ms-&gt;usage" to fix a race with section_deactivate() where<br /> ms-&gt;usage can be cleared. The READ_ONCE() call, by itself, is not enough<br /> to prevent NULL pointer dereference. We need to check its value before<br /> dereferencing it.

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:*:*:*:*:*:*:*:* 5.10.219 (including) 5.10.222 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.15.149 (including) 5.15.163 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.1.76 (including) 6.1.100 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.6.15 (including) 6.6.41 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.8 (including) 6.9.10 (excluding)

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


References to Advisories, Solutions, and Tools