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.

• CWE-416

• https://git.kernel.org/stable/c/316db489647b8ddc381682597e89787eac61a278Patch
• https://git.kernel.org/stable/c/4cf67d3cc9994a59cf77bb9c0ccf9007fe916afePatch
• https://git.kernel.org/stable/c/748fadc08bcbdaf573b34d9784bb3dbd87441dbfPatch

Published

Oct 1, 2025

Last Modified

Jun 17, 2026

Status

Analyzed

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