thunderbolt: Fix bandwidth group reservation indexing (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: thunderbolt: Fix bandwidth group reservation indexing Valid bandwidth group IDs range from 1 through MAX_GROUPS, while Group ID 0 is reserved. tb_consumed_dp_bandwidth() uses the Group ID directly to index its local group_reserved[] array. The array currently has MAX_GROUPS entries, so its valid indices are 0 through MAX_GROUPS - 1. Group ID MAX_GROUPS therefore accesses one element past the end, and the final group's reserved bandwidth is not included when the array is summed. Give group_reserved[] MAX_GROUPS + 1 entries so direct Group ID indexing covers the reserved ID 0 and valid IDs 1 through MAX_GROUPS.
References
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-2026-70340
- GCVE · GCVE-0-2026-80736
CERT-FR advisories
- CERTFR-2026-AVI-1232 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 52a4490e89d7c4effe613d8dffd2ac0a2a786bd7 < 0bfb67ba366cd68d1d0ad935760577bae1d5df27 ; affected 52a4490e89d7c4effe613d8dffd2ac0a2a786bd7 < 9977321835c7ae71d12a43bed7baa5bd514d01c3 ; affected 52a4490e89d7c4effe613d8dffd2ac0a2a786bd7 < 0a8c9ed4f166216642a8c084f0de415169c88088 ; affected 52a4490e89d7c4effe613d8dffd2ac0a2a786bd7 < d2ee4d47aacbd2ba456092eeec670dba35fde291 |
| Linux · Linux | affected 6.9 ; unaffected 0 < 6.9 ; unaffected 6.12.104 ≤ 6.12.* ; unaffected 6.18.45 ≤ 6.18.* ; unaffected 7.1.9 ≤ 7.1.* ; unaffected 7.2 ≤ * |
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 |