Bluetooth: hci_core: Fix UAF in hci_unregister_dev() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.13 % · percentile 2 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_core: Fix UAF in hci_unregister_dev() hci_unregister_dev() does not disable cmd_timer and ncmd_timer before the hci_dev structure is freed. If a timeout fires during device teardown, the callback dereferences freed memory (including the hdev->reset function pointer), leading to a use-after-free. Add disable_delayed_work_sync() calls alongside the existing disable_work_sync() calls to ensure both timers are fully quiesced before teardown proceeds.
References
- https://git.kernel.org/stable/c/c277f624cd99e4f0e0223fd039b7615feea4afdc
- https://git.kernel.org/stable/c/bce2eec05bce548b548aca52c1834540f97d5d60
- https://git.kernel.org/stable/c/48c7ad6afcc58c2cda11fed39791708103b6a644
- https://git.kernel.org/stable/c/a0fd1086a57b982f8c24ae4ab165c2af39fe1735
- https://git.kernel.org/stable/c/672d52d9412252e61b8de8d773ccdf5a277cf540
- https://git.kernel.org/stable/c/5edcc018fa6e80b2c478454a4a8229c23d67c181
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-2026-59449
- GCVE · GCVE-0-2026-74302
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1372 — Multiples vulnérabilités dans les produits SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1335 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1231 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1203 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 96600c2e5ee8213dbab5df1617293d8e847bb4fa < c277f624cd99e4f0e0223fd039b7615feea4afdc ; affected d6cbce18370641a21dd889e8613d8153df15eb39 < bce2eec05bce548b548aca52c1834540f97d5d60 ; affected 0d151a103775dd9645c78c97f77d6e2a5298d913 < 48c7ad6afcc58c2cda11fed39791708103b6a644 ; affected 0d151a103775dd9645c78c97f77d6e2a5298d913 < a0fd1086a57b982f8c24ae4ab165c2af39fe1735 ; affected 0d151a103775dd9645c78c97f77d6e2a5298d913 < 672d52d9412252e61b8de8d773ccdf5a277cf540 ; affected 0d151a103775dd9645c78c97f77d6e2a5298d913 < 5edcc018fa6e80b2c478454a4a8229c23d67c181 |
| Linux · Linux | affected 6.10 ; unaffected 0 < 6.10 ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.160 ≤ 6.6.* ; unaffected 6.12.97 ≤ 6.12.* ; unaffected 6.18.40 ≤ 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 |