CVE-2019-8921
lowpriority · track · 26OT risk · elevatedEPSS 0.010 · 63 %ileEURUUSEPSS · scored 2026-10-27
An issue was discovered in bluetoothd in BlueZ through 5.48. The vulnerability lies in the handling of a SVC_ATTR_REQ by the SDP implementation. By crafting a malicious CSTATE, it is possible to trick the server into returning more bytes than the buffer actually holds, resulting in leaking arbitrary heap data. The root cause can be found in the function service_attr_req of sdpd-request.c. The server does not check whether the CSTATE data is the same in consecutive requests, and instead simply trusts that it is the same.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.3–6.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (22)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (16)
External citations — patches, advisories, analysis.
- https://lists.debian.org/debian-lts-announce/2022/10/msg00026.htmlcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2019-8921cnnvd
- https://security.netapp.com/advisory/ntap-20211203-0002/cnnvd
- https://ssd-disclosure.com/ssd-advisory-linux-bluez-information-leak-and-heap-overflow/cnnvd
- https://ssd-disclosure.com/ssd-advisory-linux-bluez-information-leak-and-heap-overflow/。Patchcnnvd
- https://vigilance.fr/vulnerability/BlueZ-memory-reading-via-SDP-SVC-ATTR-REQ-36977cnnvd
- https://www.auscert.org.au/bulletins/ESB-2021.4011cnnvd
- https://www.auscert.org.au/bulletins/ESB-2022.5284cnnvd
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