CVE-2022-48731

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

20/06/2024

Last modified:

01/04/2025

Description

In the Linux kernel, the following vulnerability has been resolved: mm/kmemleak: avoid scanning potential huge holes When using devm_request_free_mem_region() and devm_memremap_pages() to add ZONE_DEVICE memory, if requested free mem region&#39;s end pfn were huge(e.g., 0x400000000), the node_end_pfn() will be also huge (see move_pfn_range_to_zone()). Thus it creates a huge hole between node_start_pfn() and node_end_pfn(). We found on some AMD APUs, amdkfd requested such a free mem region and created a huge hole. In such a case, following code snippet was just doing busy test_bit() looping on the huge hole. for (pfn = start_pfn; pfn

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::::::::		5.4.178 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.99 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.22 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	5.16.8 (excluding)
cpe:2.3:o:linux:linux_kernel:5.17:rc1::::::
cpe:2.3:o:linux:linux_kernel:5.17:rc2::::::

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

CVE-2022-48731

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools