FKIE_CVE-2023-53479

Vulnerability from fkie_nvd - Published: 2025-10-01 12:15 - Updated: 2026-01-20 16:37
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/316db489647b8ddc381682597e89787eac61a278Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4cf67d3cc9994a59cf77bb9c0ccf9007fe916afePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/748fadc08bcbdaf573b34d9784bb3dbd87441dbfPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.5
linux linux_kernel 6.5
linux linux_kernel 6.5
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/acpi: Fix a use-after-free in cxl_parse_cfmws()\n\nKASAN and KFENCE detected an user-after-free in the CXL driver. This\nhappens in the cxl_decoder_add() fail path. KASAN prints the following\nerror:\n\n   BUG: KASAN: slab-use-after-free in cxl_parse_cfmws (drivers/cxl/acpi.c:299)\n\nThis happens in cxl_parse_cfmws(), where put_device() is called,\nreleasing cxld, which is accessed later.\n\nUse the local variables in the dev_err() instead of pointing to the\nreleased memory. Since the dev_err() is printing a resource, change the open\ncoded print format to use the %pr format specifier."
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