PT-2025-38465 · Linux+2 · Linux Kernel+2
Published
2023-05-07
·
Updated
2025-11-19
·
CVE-2023-53446
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 issue was identified in the PCI/ASPM subsystem of the Linux kernel. Specifically, the vulnerability occurs when removing a PCI function from a multi-function device while ASPM (Active State Power Management) is enabled. The
pcie link state->downstream pointer, which points to the PCI device of function 0, is retained after function 0 is removed. Subsequent ASPM policy changes then dereference this dangling pointer, leading to a use-after-free condition. The PCIe specification recommends maintaining consistent ASPM Control values across all functions of a multi-function device.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
Suse