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dmesg_restrict

file: /proc/sys/kernel/dmesg_restrict
variable: kernel.dmesg_restrict
Official reference

This toggle indicates whether unprivileged users are prevented from using dmesg(8) to view messages from the kernel’s log buffer. When dmesg_restrict is set to 0 there are no restrictions. When dmesg_restrict is set to 1, users must have CAP_SYSLOG to use dmesg(8).

The kernel config option CONFIG_SECURITY_DMESG_RESTRICT sets the default value of dmesg_restrict.

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Last update: 2026-03-30 12:00:00 UTC
Parsed kernel version 6.18 from git

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Updated by Ilya Vasilyev aka Nadz Goldman from Arviol ( vStack dep. ), ITG