CVE-2021-43396 · cross-distro fix matrix

CVE-2021-43396: In iconvdata/iso-2022-jp-3.c in the GNU C Library (aka glibc) 2.34, remote attackers can force iconv() to emit a spurious '\0' character via crafted ISO-2022-JP-3 data that is accompanied by an internal state reset. This may affect data integrity in certain iconv() use cases. NOTE: the vendor states

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-43396 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

glibc→ fixed in2.31-13+deb11u3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y glibc
```

Debian bookworm

Source: Debian Security Tracker

glibc→ fixed in2.32-5urgency: unimportant

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

Debian trixie

Source: Debian Security Tracker

glibc→ fixed in2.32-5urgency: unimportant

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

Are YOU affected by CVE-2021-43396?

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

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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