Description
In the Linux kernel, the following vulnerability has been resolved: openvswitch: avoid reallocating confirmed conntrack labels ovs_ct_get_conn_labels() adds the labels extension when a conntrack entry does not have one. Confirmed conntracks can be read locklessly, so adding an extension may reallocate and free the extension block while another CPU accesses it. Only add the extension for unconfirmed conntracks. A confirmed conntrack without labels now fails the caller's label operation instead of reallocating its extension storage.
References8
- git.kernel.org/stable/c/05eab8dced6bf4d3009a6eeee16ddac99047dc83
- git.kernel.org/stable/c/2e6dd889c325abf23821e1459c3ffef59b7f0009
- git.kernel.org/stable/c/3f118c8217c109fd13ca61caa301d72c483897ef
- git.kernel.org/stable/c/4371d79ea74407fb992c985b1f94391e35bb8289
- git.kernel.org/stable/c/579d87ec1e1e85729a6cb2c25961e58beb78640c
- git.kernel.org/stable/c/7ff688aceada1160331a789385ea146f62fbddf7
- git.kernel.org/stable/c/8c9fcc6c33950d3db551af664d1fd3d998bfee56
- git.kernel.org/stable/c/d16f089bd700f45d720ce989d5495e1dc3be0cf8
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 10 November 2026
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