bt: l2cap le coc: remote oob write via seg counter stored in net_buf user_data (zephyrproject-rtos Zephyr)
En bref
- Source
- NVD
- EPSS
- EPSS 0.45 % · centile 39 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- zephyr
- Statut NVD
- Analyzed
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Description
A remote, unauthenticated BLE peer can trigger a 2-byte out-of-bounds write in the Bluetooth host during L2CAP LE CoC SDU reassembly. When the application enables segmentation (via chan_ops.alloc_buf) and the chosen RX pool has a user_data_size smaller than 2 bytes, the segmentation counter stored in the net_buf user_data area is written out of bounds in l2cap_chan_le_recv_seg (subsys/bluetooth/host/l2cap.c). The observed effects are an AddressSanitizer abort and, without ASan, heap corruption / fatal error.
Faiblesses (CWE)
- CWE-787 — Écriture hors limites
Références
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.6 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H | zephyr |
| CVSS 3.1 | HIGH 7.6 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H | NVD · vulnerabilities@zephyrproject.org (Secondary) |
| 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 · nvd@nist.gov (Primary) |
Références européennes
- ENISA EUVD · EUVD-2026-35353
- GCVE · GCVE-0-2026-5068
Configurations affectées (CPE NVD)
cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*≤ 4.4.0
Produits affectés
| Produit | Versions |
|---|---|
| zephyrproject-rtos · Zephyr | affected 1.14.0 < 4.3.1 |
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 |
| 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 |