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CVE-2016-9798

17
FAUCET Score

CVE-2016-9798 describes a use-after-free vulnerability in BlueZ 5.42, specifically within the "conf_opt" function in "tools/parser/l2cap.c". This flaw can be triggered by processing a maliciously crafted dump file, leading to a denial of service through an hcidump crash. Rated as Medium severity (CVSS 5.3), it has a low attack complexity and does not require user interaction or privileges, but its impact is limited to availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
5.42CPE matchmatch criteria
cpe:2.3:a:bluez:bluez:5.42:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.81%
Probability of exploitation in next 30 days
EPSS Percentile
88.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0381 is in the 85th percentile among its peer group of 23,690 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: bluez-hcidump
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: bluez
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: bluez

Vendor Advisories (1)

redhatCVE-2016-9798Low

bluez: use-after-free in conf_opt()

Dec 3, 2016

References

lists.opensuse.org / opensuse-security-announce/2019-05/msg00069.html
lists.opensuse.org / opensuse-security-announce/2019-11/msg00071.html
lists.opensuse.org / opensuse-security-announce/2019-11/msg00072.html
spinics.net / lists/linux-bluetooth/msg68892.html
ExploitThird Party Advisory
securityfocus.com / bid/94652
Third Party AdvisoryVDB Entry