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MDEV-39057: systemd: Add low risk hardening to unit templates #4787

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MDEV-39057: systemd: Add low risk hardening to unit templates #4787

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21 changes: 21 additions & 0 deletions support-files/mariadb.service.in
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Original file line number Diff line number Diff line change
Expand Up @@ -59,6 +59,27 @@ ProtectSystem=full
# Doesn't yet work properly with SELinux enabled
# NoNewPrivileges=true

# Restrict modifications of kernel interfaces from the MariaDB service context.
#
# Note: ProtectKernelTunables makes /proc and /sys read-only, but it does not
# necessarily remount separate sub-mounts under /sys/fs (for example cgroupfs
# at /sys/fs/cgroup and selinuxfs at /sys/fs/selinux), so writes there may
# still be allowed.
ProtectKernelTunables=true
ProtectKernelModules=true
ProtectControlGroups=true
#
# Prevent creating real-time scheduling policies.
RestrictRealtime=true
#
# Prevent changing process personality(2)
LockPersonality=true
#
# Restrict use of Linux namespaces by the daemon and its children, MariaDB
# server core does not require namespace creation in typical operation
# (override via drop-in if needed).
RestrictNamespaces=true

# Prevent accessing /home, /root and /run/user
ProtectHome=true

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21 changes: 21 additions & 0 deletions support-files/mariadb@.service.in
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Original file line number Diff line number Diff line change
Expand Up @@ -190,6 +190,27 @@ ProtectSystem=full
# (https://github.com/systemd/systemd/issues/3845)
# NoNewPrivileges=true

# Restrict modifications of kernel interfaces from the MariaDB service context.
#
# Note: ProtectKernelTunables makes /proc and /sys read-only, but it does not
# necessarily remount separate sub-mounts under /sys/fs (for example cgroupfs
# at /sys/fs/cgroup and selinuxfs at /sys/fs/selinux), so writes there may
# still be allowed.
ProtectKernelTunables=true
ProtectKernelModules=true
ProtectControlGroups=true
#
# Prevent creating real-time scheduling policies.
RestrictRealtime=true
#
# Prevent changing process personality(2)
LockPersonality=true
#
# Restrict use of Linux namespaces by the daemon and its children, MariaDB
# server core does not require namespace creation in typical operation
# (override via drop-in if needed).
RestrictNamespaces=true

# Prevent accessing /home, /root and /run/user
ProtectHome=true

Expand Down