PT-2025-49381 · Linux+3 · Linux Kernel+3
Published
2025-06-12
·
Updated
2026-05-26
·
CVE-2025-40280
CVSS v2.0
6.0
Medium
| Vector | AV:L/AC:H/Au:S/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a use-after-free flaw within the TIPC (Transparent Inter-Process Communication) networking module, specifically in the
tipc mon reinit self() function. This issue was identified through syzkaller testing, which reported a use-after-free condition involving the tipc net(net)->monitors[] array. The array is protected by RTNL (Real-Time Network Layer), but the function iterates over it without acquiring the RTNL lock. The vulnerability occurs when tipc mon reinit self() is called from tipc net finalize(), which is generally under RTNL protection except during tipc net finalize work(). The root cause is a lack of RTNL protection during iteration over the monitors array.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
Debian
Linuxmint
Linux Kernel
Ubuntu