CVE-2023-52976

Severity CVSS v4.0:

Pending analysis

Type:

CWE-476 NULL Pointer Dereference

Publication date:

27/03/2025

Last modified:

15/04/2025

Description

In the Linux kernel, the following vulnerability has been resolved: efi: fix potential NULL deref in efi_mem_reserve_persistent When iterating on a linked list, a result of memremap is dereferenced without checking it for NULL. This patch adds a check that falls back on allocating a new page in case memremap doesn't succeed. Found by Linux Verification Center (linuxtesting.org) with SVACE. [ardb: return -ENOMEM instead of breaking out of the loop]

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::::::::	5.1.16 (including)	5.4.232 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.168 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.93 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.11 (excluding)
cpe:2.3:o:linux:linux_kernel:6.2:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.2:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.2:rc3::::::
cpe:2.3:o:linux:linux_kernel:6.2:rc4::::::
cpe:2.3:o:linux:linux_kernel:6.2:rc5::::::
cpe:2.3:o:linux:linux_kernel:6.2:rc6::::::

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

CVE-2023-52976

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools