CVE-2023-53479 — Use After Free in Linux

CWE-416 — Use After FreeCWE-825 — Expired Pointer Dereference5 documents5 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 98.19%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedOct 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() inste…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages4 packages

▶NVDlinux/linux_kernel6.0 — 6.1.43+2
▶Debianlinux/linux_kernel< 6.1.52-1+2
▶CVEListV5linux/linuxe50fe01e1f2a4aba2275edee7d5c77ac87674ddb — 748fadc08bcbdaf573b34d9784bb3dbd87441dbf+3
▶debiandebian/linux< linux 6.1.52-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-mfgv-xhqx-f8x7: 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↗2025-10-01
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OSV
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 u↗2025-10-01
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📋Vendor Advisories

2
Red Hat
kernel: Linux kernel CXL driver: Use-after-free vulnerability leading to system instability or privilege escalation↗2025-10-01
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Debian
CVE-2023-53479: linux - In the Linux kernel, the following vulnerability has been resolved: cxl/acpi: F...↗2023
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