Vulnerability Database

319,897

Total vulnerabilities in the database

CVE-2023-53479

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.

  • Published: Oct 1, 2025
  • Updated: Jan 21, 2026
  • CVE: CVE-2023-53479
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.8
  • AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWEs:

Software From Fixed in
linux / linux_kernel 6.0 6.1.43
linux / linux_kernel 6.2 6.4.8
linux / linux_kernel 6.5-rc1 6.5-rc1.x
linux / linux_kernel 6.5-rc2 6.5-rc2.x
linux / linux_kernel 6.5-rc3 6.5-rc3.x