Vulnerability record · CVE-2019-8922 · published 29 November 2021
CVE-2019-8922: Bluez out-of-bounds write vulnerability
Bluez · Bluez
A heap-based buffer overflow was discovered in bluetoothd in BlueZ through 5.48. There isn't any check on whether there is enough space in the destination buffer. The function simply appends all data passed to it. The values of all attributes that are requested are appended to the output buffer. There are no size checks whatsoever, resulting in a simple heap overflow if one can craft a request where the response is large enough to overflow the preallocated buffer. This issue exists in service_attr_req gets called by process_request (in sdpd-request.c), which also allocates the response buffer.
Description
A heap-based buffer overflow was discovered in bluetoothd in BlueZ through 5.48. There isn't any check on whether there is enough space in the destination buffer. The function simply appends all data passed to it. The values of all attributes that are requested are appended to the output buffer. There are no size checks whatsoever, resulting in a simple heap overflow if one can craft a request where the response is large enough to overflow the preallocated buffer. This issue exists in service_attr_req gets called by process_request (in sdpd-request.c), which also allocates the response buffer.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.
References
| Link | Tags |
|---|---|
| https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html | Mailing ListThird Party Advisory |
| https://security.netapp.com/advisory/ntap-20211203-0002/ | Third Party Advisory |
| https://ssd-disclosure.com/ssd-advisory-linux-bluez-information-leak-and-heap-overflow/ | ExploitThird Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html | Mailing ListThird Party Advisory |
| https://security.netapp.com/advisory/ntap-20211203-0002/ | Third Party Advisory |
| https://ssd-disclosure.com/ssd-advisory-linux-bluez-information-leak-and-heap-overflow/ | ExploitThird Party Advisory |
Track CVE-2019-8922 inside VULONE
Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.
Related vulnerabilities
Same products first, then exploited flaws of the same weakness class.
Source: NIST National Vulnerability Database (record CVE-2019-8922), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.
