PT-2026-34435 · Linux · Linux Kernel
CVE-2026-31530
·
Published
2026-04-22
·
Updated
2026-07-24
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 exists in the
cxl detach ep() function. This occurs during bottom-up removal when CXL memory devices beneath a switch port are removed. The issue arises because there is no lifetime guarantee between a child port and its parent port, leading to two scenarios where parent port may be accessed after being freed: first, during concurrent detach operations where a port may be processed by another worker before being unlocked; and second, when delete switch port() triggers a cascade of unregistrations that may free the parent port before it is unlocked.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
Linux Kernel