openvswitch: avoid reallocating confirmed conntrack labels (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.13 % · percentile 3 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
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.
References
- https://git.kernel.org/stable/c/4371d79ea74407fb992c985b1f94391e35bb8289
- https://git.kernel.org/stable/c/7ff688aceada1160331a789385ea146f62fbddf7
- https://git.kernel.org/stable/c/05eab8dced6bf4d3009a6eeee16ddac99047dc83
- https://git.kernel.org/stable/c/579d87ec1e1e85729a6cb2c25961e58beb78640c
- https://git.kernel.org/stable/c/2e6dd889c325abf23821e1459c3ffef59b7f0009
- https://git.kernel.org/stable/c/d16f089bd700f45d720ce989d5495e1dc3be0cf8
- https://git.kernel.org/stable/c/8c9fcc6c33950d3db551af664d1fd3d998bfee56
- https://git.kernel.org/stable/c/3f118c8217c109fd13ca61caa301d72c483897ef
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-93179
- GCVE · GCVE-0-2026-98251
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1374 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected c2ac667358708d7cce64c78f58af6adf4c1e848b < 4371d79ea74407fb992c985b1f94391e35bb8289 ; affected c2ac667358708d7cce64c78f58af6adf4c1e848b < 7ff688aceada1160331a789385ea146f62fbddf7 ; affected c2ac667358708d7cce64c78f58af6adf4c1e848b < 05eab8dced6bf4d3009a6eeee16ddac99047dc83 ; affected c2ac667358708d7cce64c78f58af6adf4c1e848b < 579d87ec1e1e85729a6cb2c25961e58beb78640c ; affected c2ac667358708d7cce64c78f58af6adf4c1e848b < 2e6dd889c325abf23821e1459c3ffef59b7f0009 ; affected c2ac667358708d7cce64c78f58af6adf4c1e848b < d16f089bd700f45d720ce989d5495e1dc3be0cf8 |
| Linux · Linux | affected 4.3 ; unaffected 0 < 4.3 ; unaffected 5.10.271 ≤ 5.10.* ; unaffected 5.15.222 ≤ 5.15.* ; unaffected 6.1.189 ≤ 6.1.* ; unaffected 6.6.158 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |