PT-2025-14319 · Linux+6 · Linux Kernel+6
Published
2025-03-03
·
Updated
2026-01-20
·
CVE-2025-21938
CVSS v2.0
5.4
Medium
| Vector | AV:N/AC:H/Au:N/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue arises when multiple connection requests attempt to create an implicit mptcp endpoint in parallel, potentially leading to the deletion of address entries created by previous callers. This can occur when the function
mptcp pm nl append new local addr is called, which may use synchronize rcu in contexts where it is not permitted. The problem is particularly prevalent when a user advertises an endpoint with different external and internal addresses, and multiple connections already exist. This can trigger a race during the creation of the first local address list entries.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Race Condition
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu