CVE-2016-2856 · cross-distro fix matrix

CVE-2016-2856: pt_chown in the glibc package before 2.19-18+deb8u4 on Debian jessie; the elibc package before 2.15-0ubuntu10.14 on Ubuntu 12.04 LTS and before 2.19-0ubuntu6.8 on Ubuntu 14.04 LTS; and the glibc package before 2.21-0ubuntu4.2 on Ubuntu 15.10 and before 2.23-0ubuntu1 on Ubuntu 16.04 LTS and 16.10 lac

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2016-2856 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

glibc→ fixed in2.21-1urgency: low

sudo apt-get install --only-upgrade -y glibc

Debian bookworm

Source: Debian Security Tracker

glibc→ fixed in2.21-1urgency: low

sudo apt-get install --only-upgrade -y glibc

Debian trixie

Source: Debian Security Tracker

glibc→ fixed in2.21-1urgency: low

sudo apt-get install --only-upgrade -y glibc

Are YOU affected by CVE-2016-2856?

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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