PT-2025-4342 · Linux+3 · Linux Kernel+3
Koichiro Den
·
Published
2025-01-03
·
Updated
2025-04-01
·
CVE-2025-21661
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A memory leak and cleanup issue has been identified in the Linux kernel when a virtuser device is created via configfs and the probe fails due to an incorrect lookup table. The table is not removed, preventing subsequent probe attempts from succeeding. Additionally, a consistent memory leak in
lookup table->dev id was spotted using kmemleak. The issue is resolved by introducing gpio virtuser remove lookup table() to ensure proper cleanup.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Memory Leak
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linuxmint
Linux Kernel
Ubuntu