Use-after-free in Linux kernel - CVE-2023-53123

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Main Vulnerability Database Vulnerabilities #VU108426

Use-after-free in Linux kernel - CVE-2023-53123

Published: May 4, 2025 / Updated: May 10, 2025


Vulnerability identifier: #VU108426
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-53123
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel

Detailed vulnerability description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the pci_bus_resource_n() function in drivers/pci/bus.c, within the zpci_bus_prepare_device() function in arch/s390/pci/pci_bus.c, within the __alloc_res() and zpci_setup_bus_resources() functions in arch/s390/pci/pci.c. A local user can escalate privileges on the system.


How to mitigate CVE-2023-53123

Install update from vendor's website.

Sources