PT-2025-25850 · Linux+3 · Linux Kernel+3
Published
2025-05-25
·
Updated
2025-12-03
·
CVE-2025-38076
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 vulnerability in the Linux kernel has been resolved, related to the allocation of percpu counters for module tags. When a module is unloaded, it checks if any of its tags are still in use and keeps the memory containing the module's allocation tags alive until all tags are unused. However, percpu counters referenced by the tags are freed, leading to a use-after-free (UAF) issue if the memory allocated by a module is accessed after the module is unloaded. The fix involves dynamically allocating percpu counters for module allocation tags and keeping them alive for tags still in use after module unloading.
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
Linuxmint
Linux Kernel
Ubuntu