Is CVE-2021-41229 in the CISA KEV catalog?

No. CVE-2021-41229 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-41229?

CVE-2021-41229 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2021-41229?

CVE-2021-41229 has an EPSS score of 1.10% (62th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-41229?

Upgrade bluez on debian 11 to 5.55-3.1+deb11u2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-41229

MEDIUM

4.3

CVSS v3

NVD

Description

BlueZ is a Bluetooth protocol stack for Linux. In affected versions a vulnerability exists in sdp_cstate_alloc_buf which allocates memory which will always be hung in the singly linked list of cstates and will not be freed. This will cause a memory leak over time. The data can be a very large object, which can be caused by an attacker continuously sending sdp packets and this may cause the service of the target device to crash.

CWE-400Resource Exhaustion CWE-401Missing Release of Memory (Memory Leak)

How to fix

Remediation Available

bluezDebian

Fixed in:5.55-3.1+deb11u2CVE-2021-41229

Fixed in:5.62-2CVE-2021-41229

bluezUbuntu

Fixed in:5.48-0ubuntu3.6USN-5155-1

Fixed in:5.53-0ubuntu3.4USN-5155-1

libbluetooth3Ubuntu

Fixed in:5.48-0ubuntu3.6USN-5155-1

Fixed in:5.53-0ubuntu3.4USN-5155-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

1.10%probability of exploitation in 30 days

62ndpercentile

Moderate risk: more likely to be exploited than 62% of all known CVEs.

References

Exploit1

github.com

Third-Party Advisory3

Other references1

lists.debian.org

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-44487	High	7.5	100%	KEV	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2011-3192	High	7.8	99%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2024-25617	Medium	5.3	89%	-	Fix
CVE-2018-1000115	High	7.5	89%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.