#VU108426 Use-after-free in Linux kernel - CVE-2023-53123
Published: May 4, 2025 / Updated: May 10, 2025
Vulnerability identifier: #VU108426
Vulnerability risk: Low
CVSSv4.0: 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
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
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.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/437bb839e36cc9f35adc6d2a2bf113b7a0fc9985
- https://git.kernel.org/stable/c/a2410d0c3d2d714ed968a135dfcbed6aa3ff7027
- https://git.kernel.org/stable/c/ab909509850b27fd39b8ba99e44cda39dbc3858c
- https://git.kernel.org/stable/c/b99ebf4b62774e690e73a551cf5fbf6f219bdd96
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.8