Bluetooth: hci_sync: hold conn in hci_connect_big_sync() callback (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.38 % · percentile 32 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: hold conn in hci_connect_big_sync() callback There is theoretical UAF if the conn is freed while the hci_sync task is running. Hold refcount to avoid that. Handle NULL hcon, return 0 + do nothing to match the previous behavior.
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-59723
- GCVE · GCVE-0-2026-74530
CERT-FR advisories
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 620810ac1f7f1133a9ac403e132b3ad6995ddf39 < 117d8bcaf1abc348185e8ab6a4ba9f8f516849a0 ; affected 024421cf39923927ab2b5fe895d1d922b9abe67f < ff5625d27415ace5667bf87ebc16c3a0a98db22f ; affected 024421cf39923927ab2b5fe895d1d922b9abe67f < 2d91e6244b69d752503b2d44020d8b0e323dbd38 ; affected 024421cf39923927ab2b5fe895d1d922b9abe67f < 56e78b670356caab0b607e8aad4cf819a1909d07 ; affected ee0586ad64a805eaf1a9a10100e908627a561e34 ; affected 6.12.28 < 6.12.114 |
| Linux · Linux | affected 6.15 ; unaffected 0 < 6.15 ; unaffected 6.12.114 ≤ 6.12.* ; unaffected 6.18.57 ≤ 6.18.* ; unaffected 7.1.8 ≤ 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 |