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CVE-2021-32686 · cross-distro fix matrix

CVE-2021-32686: 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 before version 2.11.1, there are a couple of issues found in the SSL socket. First, a race condition between callback and

Affects 7 Linux releases across 8 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-32686 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • asterisk→ fixed in1:16.16.1~dfsg-1+deb11u1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y asterisk
  • ring→ fixed in20210112.2.b757bac~ds1-1+deb11u1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y ring

Debian bookworm

Source: Debian Security Tracker

  • ring→ fixed in20230206.0~ds1-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y ring

Alpine v3.20

Source: Alpine secdb

  • pjproject→ fixed in2.11.1-r0
    apk update && apk add --upgrade pjproject

Alpine v3.21

Source: Alpine secdb

  • pjproject→ fixed in2.11.1-r0
    apk update && apk add --upgrade pjproject

Alpine edge

Source: Alpine secdb

  • pjproject→ fixed in2.11.1-r0
    apk update && apk add --upgrade pjproject

Alpine v3.18

Source: Alpine secdb

  • pjproject→ fixed in2.11.1-r0
    apk update && apk add --upgrade pjproject

Alpine v3.19

Source: Alpine secdb

  • pjproject→ fixed in2.11.1-r0
    apk update && apk add --upgrade pjproject
Are YOU affected by CVE-2021-32686?

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.

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