Answer in brief
CVE-2026-98251 records a Unknown severity vulnerability in openvswitch: avoid reallocating confirmed conntrack labels. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c2ac667358708d7cce64c78f58af6adf4c1e848b <4371d79ea74407fb992c985b1f94391e35bb8289 || >=c2ac667358708d7cce64c78f58af6adf4c1e848b <7ff688aceada1160331a789385ea146f62fbddf7 || >=c2ac667358708d7cce64c78f58af6adf4c1e848b <05eab8dced6bf4d3009a6eeee16ddac99047dc83 || >=c2ac667358708d7cce64c78f58af6adf4c1e848b <579d87ec1e1e85729a6cb2c25961e58beb78640c || >=c2ac667358708d7cce64c78f58af6adf4c1e848b <2e6dd889c325abf23821e1459c3ffef59b7f0009 || >=c2ac667358708d7cce64c78f58af6adf4c1e848b <d16f089bd700f45d720ce989d5495e1dc3be0cf8 || >=c2ac667358708d7cce64c78f58af6adf4c1e848b <8c9fcc6c33950d3db551af664d1fd3d998bfee56 || >=c2ac667358708d7cce64c78f58af6adf4c1e848b <3f118c8217c109fd13ca61caa301d72c483897ef | 4371d79ea74407fb992c985b1f94391e35bb8289, 7ff688aceada1160331a789385ea146f62fbddf7, 05eab8dced6bf4d3009a6eeee16ddac99047dc83, 579d87ec1e1e85729a6cb2c25961e58beb78640c, 2e6dd889c325abf23821e1459c3ffef59b7f0009, d16f089bd700f45d720ce989d5495e1dc3be0cf8, 8c9fcc6c33950d3db551af664d1fd3d998bfee56, 3f118c8217c109fd13ca61caa301d72c483897ef |
| Linux/Linuxgeneric | 4.3 | Not reported |
Published upstream
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 6, 2026
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.
Quoted source text, attributed separately from HOL analysis.