CVE-2021-41141— Missing release of locks in PJSIP
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I. Basic Information for CVE-2021-41141
Vulnerability Information
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Vulnerability Title
Missing release of locks in PJSIP
Source: NVD (National Vulnerability Database)
Vulnerability Description
PJSIP is a free and open source multimedia communication library written in the C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In various parts of PJSIP, when error/failure occurs, it is found that the function returns without releasing the currently held locks. This could result in a system deadlock, which cause a denial of service for the users. No release has yet been made which contains the linked fix commit. All versions up to an including 2.11.1 are affected. Users may need to manually apply the patch.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
加锁机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
PJSIP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PJSIP是一个免费和开源的多媒体通信库，用C语言编写，实现基于标准的协议，如SIP, SDP, RTP, STUN, TURN，和ICE。 PJSIP 存在安全漏洞，在PJSIP的各个部分，当出现error/failure时，发现函数返回时没有释放当前持有的locks。这可能会导致系统锁死，从而导致用户拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2021-41141
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- https://security.gentoo.org/glsa/202210-37vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2021-41141
IV. Related Vulnerabilities
Same product: pjproject
- CVE-2026-42225
GnuTLS backend silently skips certificate chain verification - CVE-2026-41416
PJSIP: Asymmetric ptime integer overflow in Media Stream - CVE-2026-41415
PJSIP: SIP Multipart CID URI Length Underflow - CVE-2026-40892
PJSIP: Stack buffer overflow in pjsip_auth_create_digest2() - CVE-2026-40614
PJSIP: Heap buffer overflow in Opus codec decoding
Same vendor: pjsip
- CVE-2026-42225
GnuTLS backend silently skips certificate chain verification - CVE-2026-41416
PJSIP: Asymmetric ptime integer overflow in Media Stream - CVE-2026-41415
PJSIP: SIP Multipart CID URI Length Underflow - CVE-2026-40892
PJSIP: Stack buffer overflow in pjsip_auth_create_digest2() - CVE-2026-40614
PJSIP: Heap buffer overflow in Opus codec decoding
Same weakness: CWE-667
- CVE-2026-20065
Multiple Cisco Products Snort 3 TBD Denial of Service Vulner - CVE-2026-20757
Gallagher Command Centre Server 安全漏洞 - CVE-2026-21914
Junos OS: SRX Series: A specifically malformed GTP message w - CVE-2025-34467
ZwiiCMS < 13.7.00 Lock Persistence Authenticated DoS Against - CVE-2025-14345
Cross-Shard Failovers May Lead to Partial Transaction Commit
V. Comments for CVE-2021-41141
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