CVE-2023-53479

high

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.

References

https://git.kernel.org/stable/c/748fadc08bcbdaf573b34d9784bb3dbd87441dbf

https://git.kernel.org/stable/c/4cf67d3cc9994a59cf77bb9c0ccf9007fe916afe

https://git.kernel.org/stable/c/316db489647b8ddc381682597e89787eac61a278

Details

Source: Mitre, NVD

Published: 2025-10-01

Updated: 2025-10-02

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00017