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| author | Karel Zak | 2017-02-27 12:09:35 +0100 |
|---|---|---|
| committer | Karel Zak | 2017-02-27 12:09:35 +0100 |
| commit | 86b6d7f4346c6b85c60aaae993ce5b27dfff6bea (patch) | |
| tree | 178e47dace3896caa9ff850d20d3bae36ab2271e /sys-utils/unshare.1 | |
| parent | docs: add note about branches to README (diff) | |
| download | kernel-qcow2-util-linux-86b6d7f4346c6b85c60aaae993ce5b27dfff6bea.tar.gz kernel-qcow2-util-linux-86b6d7f4346c6b85c60aaae993ce5b27dfff6bea.tar.xz kernel-qcow2-util-linux-86b6d7f4346c6b85c60aaae993ce5b27dfff6bea.zip | |
unshare: add note about sysfs and procfs
Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=1390057
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'sys-utils/unshare.1')
| -rw-r--r-- | sys-utils/unshare.1 | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys-utils/unshare.1 b/sys-utils/unshare.1 index 7c7d144d1..dd12c7446 100644 --- a/sys-utils/unshare.1 +++ b/sys-utils/unshare.1 @@ -183,6 +183,11 @@ Display version information and exit. .TP .BR \-h , " \-\-help" Display help text and exit. +.SH NOTES +The proc and sysfs filesystems mounting as root in a user namespace have to be +restricted so that a less privileged user can not get more access to sensitive +files that a more privileged user made unavailable. In short the rule for proc +and sysfs is as close to a bind mount as possible. .SH EXAMPLES .TP .B # unshare --fork --pid --mount-proc readlink /proc/self |