CVE-2023-53479

HIGH

Linux Kernel 6.0-6.1.43 6.4.8-6.4.* 6.5 - Use-After-Free in CXL Driver

Title source: llm
STIX 2.1

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.

Scores

CVSS v3 7.8
EPSS 0.0015
EPSS Percentile 4.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (10)
Linux/Linux < 6.0
Linux/Linux 6.0
Linux/Linux 6.1.43 - 6.1.*
Linux/Linux 6.4.8 - 6.4.*
Linux/Linux 6.5
Linux/Linux e50fe01e1f2a4aba2275edee7d5c77ac87674ddb - 316db489647b8ddc381682597e89787eac61a278
Linux/Linux e50fe01e1f2a4aba2275edee7d5c77ac87674ddb - 4cf67d3cc9994a59cf77bb9c0ccf9007fe916afe
Linux/Linux e50fe01e1f2a4aba2275edee7d5c77ac87674ddb - 748fadc08bcbdaf573b34d9784bb3dbd87441dbf
linux/linux_kernel 6.5 rc1 (3 CPE variants)
linux/linux_kernel 6.0 - 6.1.43
Published Oct 01, 2025
Tracked Since Feb 18, 2026