PT-2025-4362 · Linux+6 · Linux Kernel+6
Friedrich Weber
·
Published
2025-01-09
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Updated
2026-02-12
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CVE-2025-21681
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
The issue is related to an infinite loop in the
skb tx hash function when a device is unregistering, causing a lockup. This occurs because some devices, like net/dummy, may still report a carrier status of OK while unregistering. The problem is fixed by checking both the carrier status and the running state of the device. The running state is handled by the net core during unregistering, making it a more reliable check. The estimated number of potentially affected devices is not provided, and 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
Infinite Loop
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu