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CVE-2021-46828 · cross-distro fix matrix

CVE-2021-46828: In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections.

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-46828 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • libtirpc→ fixed in1.3.1-1+deb11u1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y libtirpc

Debian bookworm

Source: Debian Security Tracker

  • libtirpc→ fixed in1.3.2-2.1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y libtirpc

Debian trixie

Source: Debian Security Tracker

  • libtirpc→ fixed in1.3.2-2.1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y libtirpc

Alpine v3.20

Source: Alpine secdb

  • libtirpc→ fixed in1.3.2-r2
    apk update && apk add --upgrade libtirpc

Alpine v3.21

Source: Alpine secdb

  • libtirpc→ fixed in1.3.2-r2
    apk update && apk add --upgrade libtirpc

Alpine edge

Source: Alpine secdb

  • libtirpc→ fixed in1.3.2-r2
    apk update && apk add --upgrade libtirpc

Alpine v3.18

Source: Alpine secdb

  • libtirpc→ fixed in1.3.2-r2
    apk update && apk add --upgrade libtirpc

Alpine v3.19

Source: Alpine secdb

  • libtirpc→ fixed in1.3.2-r2
    apk update && apk add --upgrade libtirpc
Are YOU affected by CVE-2021-46828?

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