SB2025050409 - Use-after-free in Linux kernel s390 pci
Published: May 4, 2025 Updated: May 10, 2025
Security Bulletin ID
SB2025050409
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2023-53123)
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.
References
- 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