Debian bullseye
Source: Debian Security Tracker
ring→ fixed in20210112.2.b757bac~ds1-1urgency: not yet assignedsudo apt-get install --only-upgrade -y ring
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CVE-2021-21375 · cross-distro fix matrix
CVE-2021-21375: PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP version 2.10 and earlier, after an initial INVITE has been sent, when two 183 responses are received, with the first one c
Affects 7 Linux releases across 7 (distro × package) combinations.
Fix per ecosystem
Each block below is a distro release where CVE-2021-21375 has a known fix. Run the listed command on that distro to remediate.
Debian bookworm
Source: Debian Security Tracker
ring→ fixed in20210112.2.b757bac~ds1-1urgency: not yet assignedsudo apt-get install --only-upgrade -y ring
Alpine v3.20
Source: Alpine secdb
pjproject→ fixed in2.11-r0apk update && apk add --upgrade pjproject
Alpine v3.21
Source: Alpine secdb
pjproject→ fixed in2.11-r0apk update && apk add --upgrade pjproject
Alpine edge
Source: Alpine secdb
pjproject→ fixed in2.11-r0apk update && apk add --upgrade pjproject
Alpine v3.18
Source: Alpine secdb
pjproject→ fixed in2.11-r0apk update && apk add --upgrade pjproject
Alpine v3.19
Source: Alpine secdb
pjproject→ fixed in2.11-r0apk update && apk add --upgrade pjproject
Are YOU affected by CVE-2021-21375?
5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.
curl https://mindsparkstack.com/scan.sh | bash
Continuous monitoring beats manual checking
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