Bluetooth: btmtk: validate WMT event SKB length before struct access (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.13 % · percentile 3 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Undergoing Analysis
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btmtk: validate WMT event SKB length before struct access btmtk_usb_hci_wmt_sync() casts the WMT event response SKB data to struct btmtk_hci_wmt_evt (7 bytes) and struct btmtk_hci_wmt_evt_funcc (9 bytes) without first checking that the SKB contains enough data. A short firmware response causes out-of-bounds reads from SKB tailroom. Use skb_pull_data() to validate and advance past the base WMT event header. For the FUNC_CTRL case, pull the additional status field bytes before accessing them.
Weaknesses (CWE)
- CWE-125 — Out-of-bounds Read
References
- https://git.kernel.org/stable/c/36c85f7029484d5ede769f8873d16e9c8e35533c
- https://git.kernel.org/stable/c/c411cf1bfde951cfa821809cf4020ba177f76e0c
- https://git.kernel.org/stable/c/624fb79dadc1b65757986a9d0fdde5c0cf3fe179
- https://git.kernel.org/stable/c/70d37a8b9229e394cc17ddad47e90b81d80fcd09
- https://git.kernel.org/stable/c/634a4408c0615c523cf7531790f4f14a422b9206
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2026-32767
- GCVE · GCVE-0-2026-46140
CERT-FR advisories
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1252 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1229 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1162 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1066 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1064 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0954 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0927 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0926 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.6.142 < 6.7cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.11 < 6.12.88cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.13 < 6.18.30cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.19 < 7.0.7cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected f0457842215438786e2e205ad06a4fbb8ab63cd0 < 36c85f7029484d5ede769f8873d16e9c8e35533c ; affected d019930b0049fc2648a6b279893d8ad330596e81 < c411cf1bfde951cfa821809cf4020ba177f76e0c ; affected d019930b0049fc2648a6b279893d8ad330596e81 < 624fb79dadc1b65757986a9d0fdde5c0cf3fe179 ; affected d019930b0049fc2648a6b279893d8ad330596e81 < 70d37a8b9229e394cc17ddad47e90b81d80fcd09 ; affected d019930b0049fc2648a6b279893d8ad330596e81 < 634a4408c0615c523cf7531790f4f14a422b9206 ; affected 6.6.142 < 6.6.144 |
| Linux · Linux | affected 6.11 ; unaffected 0 < 6.11 ; unaffected 6.6.144 ≤ 6.6.* ; unaffected 6.12.88 ≤ 6.12.* ; unaffected 6.18.30 ≤ 6.18.* ; unaffected 7.0.7 ≤ 7.0.* |
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 |