CVE-2014-3956 · cross-distro fix matrix

CVE-2014-3956: The sm_close_on_exec function in conf.c in sendmail before 8.14.9 has arguments in the wrong order, and consequently skips setting expected FD_CLOEXEC flags, which allows local users to access unintended high-numbered file descriptors via a custom mail-delivery program.

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

Fix per ecosystem

Each block below is a distro release where CVE-2014-3956 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

sendmail→ fixed in8.14.4-6urgency: low

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

Debian bookworm

Source: Debian Security Tracker

sendmail→ fixed in8.14.4-6urgency: low

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

Debian trixie

Source: Debian Security Tracker

sendmail→ fixed in8.14.4-6urgency: low

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

Are YOU affected by CVE-2014-3956?

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

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