PT-2025-18887 · Linux+3 · Linux Kernel+3
Published
2023-03-06
·
Updated
2026-02-02
·
CVE-2023-53123
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A use-after-free vulnerability has been identified in the Linux kernel related to PCI resources with per-function hotplug on s390 systems. This issue arises when PCI functions are hotplugged individually, even when they belong to a multi-function device, and their MMIO resources are released and freed on hot-unplug but still retained in the struct pci bus and struct zpci bus's resource list. This can lead to a use-after-free scenario when the PCI function re-appears. The estimated number of potentially affected devices worldwide is not available. There is no information about real-world incidents where this issue was exploited.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Red Os
Suse