CVE-2026-5589
- Source
- https://cve.org/CVERecord?id=CVE-2026-5589
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5589.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-5589
- Aliases
-
- GHSA-4pm9-4v7f-x6gr
- Published
- 2026-06-04T19:54:49Z
- Modified
- 2026-08-12T03:51:14Z
- Severity
-
- 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
- Summary
- Out-of-bounds write caused by an integer underflow in the Bluetooth Mesh subsystem.
- Details
-
An integer underflow in bt_mesh_sol_recv() in the Bluetooth Mesh solicitation handling (subsys/bluetooth/mesh/solicitation.c) leads to an out-of-bounds write. When CONFIG_BT_MESH_OD_PRIV_PROXY_SRV is enabled, the function parses solicitation PDUs from raw BLE advertising payloads. The AD parsing loop reads an attacker-controlled length byte (reported_len) and computes reported_len - 3 without checking that reported_len >= 3. When reported_len is less than 3, the subtraction is performed in signed int arithmetic and yields a negative value that bypasses the length guard and is then implicitly converted to a very large size_t when passed to net_buf_simple_pull_mem(). In builds without assertions, this wraps the buffer length and advances the data pointer far out of bounds, so subsequent reads dereference invalid memory. A nearby BLE device can trigger this with a non-connectable advertisement carrying a UUID16 AD structure and a crafted length byte, with no pairing or prior association required, potentially leading to denial of service or arbitrary code execution.
- Database specific
{ "cna_assigner": "zephyr", "cwe_ids": [ "CWE-787" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5589.json" }- References