CVE-2023-53479

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

01/10/2025

Last modified:

20/01/2026

Description

In the Linux kernel, the following vulnerability has been resolved: cxl/acpi: Fix a use-after-free in cxl_parse_cfmws() KASAN and KFENCE detected an user-after-free in the CXL driver. This happens in the cxl_decoder_add() fail path. KASAN prints the following error: BUG: KASAN: slab-use-after-free in cxl_parse_cfmws (drivers/cxl/acpi.c:299) This happens in cxl_parse_cfmws(), where put_device() is called, releasing cxld, which is accessed later. Use the local variables in the dev_err() instead of pointing to the released memory. Since the dev_err() is printing a resource, change the open coded print format to use the %pr format specifier.

Impact

Vector 3.x

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

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x

7.80

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	6.0 (including)	6.1.43 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.4.8 (excluding)
cpe:2.3:o:linux:linux_kernel:6.5:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.5:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.5:rc3::::::

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

CVE-2023-53479

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools