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    CVE-2021-41229

    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.

    Published:Nov 12, 2021
    Last Modified:Nov 4, 2025
    EPS:Nov 12, 2021
    EPSS Score:0.00041
    CVSS Score:4.3

    Affected Products

    Vendor
    Bluez
    Product
    Bluez
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    https://github.com/bluez/bluez/security/advisories/GHSA-3fqg-r8j5-f5xqhttps://github.com/bluez/bluez/security/advisories/GHSA-3fqg-r8j5-f5xq

    Related CVEs

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    CVE-2023-51592 (CVSS 5.7) — BlueZ Audio Profile AVRCP parse_media_folder Out-Of-Bounds Read Information Disclosure Vulnerability. This vul…
    CVE-2023-50229 (CVSS 8) — BlueZ Phone Book Access Profile Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerabi…
    CVE-2023-44431 (CVSS 8) — BlueZ Audio Profile AVRCP Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability …
    CVE-2023-50230 (CVSS 8) — BlueZ Phone Book Access Profile Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerabi…
    CVE-2023-27349 (CVSS 8) — BlueZ Audio Profile AVRCP Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnera…
    CVE-2023-51594 (CVSS 5.7) — BlueZ OBEX Library Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows network-…
    CVE-2023-51596 (CVSS 7.1) — BlueZ Phone Book Access Profile Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerabi…
    CVE-2023-51580 (CVSS 5.7) — BlueZ Audio Profile AVRCP avrcp_parse_attribute_list Out-Of-Bounds Read Information Disclosure Vulnerability. …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High