net/sched: defer qdisc freeing after failed creation (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: net/sched: defer qdisc freeing after failed creation An RTM_NEWQDISC request can make clsact bind a populated shared ingress block during ->init(), publishing an embedded mini_Qdisc to lockless readers. If the same request has an invalid TCA_RATE, estimator setup fails after ->init(); the unwind removes the pointer but synchronously frees its containing qdisc while tc_run() may still hold it. Retire failed qdiscs through the same RCU helper as normal destruction. Inline the synchronous free into the callback now that no direct callers remain.
References
- https://git.kernel.org/stable/c/96a27a3e64e7c87abade03fb2ad04ed66992a89a
- https://git.kernel.org/stable/c/6a1b49bb9fdf9e8e7aa38e8cd635c0cc4074447d
- https://git.kernel.org/stable/c/20bf6fa34b345333971bd4464a322cce87b83f4e
- https://git.kernel.org/stable/c/156a3bab69744e9225bb9eff8c5cc53da18d5a2e
- https://git.kernel.org/stable/c/5bfe927c5b4b290fad529186218c728589b4b101
- https://git.kernel.org/stable/c/e6662f2100f8d33b0f4d0047c219efd6bba186ea
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-2026-86670
- GCVE · GCVE-0-2026-98017
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-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 51ab2994c387c80b45caf8b8067b3f3b97771d25 < 96a27a3e64e7c87abade03fb2ad04ed66992a89a ; affected 51ab2994c387c80b45caf8b8067b3f3b97771d25 < 6a1b49bb9fdf9e8e7aa38e8cd635c0cc4074447d ; affected 51ab2994c387c80b45caf8b8067b3f3b97771d25 < 20bf6fa34b345333971bd4464a322cce87b83f4e ; affected 51ab2994c387c80b45caf8b8067b3f3b97771d25 < 156a3bab69744e9225bb9eff8c5cc53da18d5a2e ; affected 51ab2994c387c80b45caf8b8067b3f3b97771d25 < 5bfe927c5b4b290fad529186218c728589b4b101 ; affected 51ab2994c387c80b45caf8b8067b3f3b97771d25 < e6662f2100f8d33b0f4d0047c219efd6bba186ea |
| Linux · Linux | affected 4.16 ; unaffected 0 < 4.16 ; unaffected 6.1.189 ≤ 6.1.* ; unaffected 6.6.158 ≤ 6.6.* ; unaffected 6.12.111 ≤ 6.12.* ; unaffected 6.18.53 ≤ 6.18.* |
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 |