Mounting Overlayfs in a user namespace
Clash Royale CLAN TAG#URR8PPP
Is it possible to mount an Overlayfs filesystem as an unprivileged user in a user namespace in Linux kernels >4.3.3; it seems that the fix to this vulnerability has blocked this functionality entirely.
When I create a new user namespace with clone(), passing the CLONE_NEWNS flag and attempt to invoke mount with an overlayfs filesystem, I'm given permission denied. I can mount any other filesystem though.
Is there a way to work around this/am I missing something?
linux mount overlayfs userns
edited Jun 20 '18 at 21:27
200_success
3,92311528
asked Jun 6 '16 at 17:49
Josh HebertJosh Hebert
211
add a comment |
Is it possible to mount an Overlayfs filesystem as an unprivileged user in a user namespace in Linux kernels >4.3.3; it seems that the fix to this vulnerability has blocked this functionality entirely.
When I create a new user namespace with clone(), passing the CLONE_NEWNS flag and attempt to invoke mount with an overlayfs filesystem, I'm given permission denied. I can mount any other filesystem though.
Is there a way to work around this/am I missing something?
linux mount overlayfs userns
edited Jun 20 '18 at 21:27
200_success
3,92311528
asked Jun 6 '16 at 17:49
Josh HebertJosh Hebert
211
add a comment |
Is it possible to mount an Overlayfs filesystem as an unprivileged user in a user namespace in Linux kernels >4.3.3; it seems that the fix to this vulnerability has blocked this functionality entirely.
When I create a new user namespace with clone(), passing the CLONE_NEWNS flag and attempt to invoke mount with an overlayfs filesystem, I'm given permission denied. I can mount any other filesystem though.
Is there a way to work around this/am I missing something?
linux mount overlayfs userns
edited Jun 20 '18 at 21:27
200_success
3,92311528
asked Jun 6 '16 at 17:49
Josh HebertJosh Hebert
211
Is it possible to mount an Overlayfs filesystem as an unprivileged user in a user namespace in Linux kernels >4.3.3; it seems that the fix to this vulnerability has blocked this functionality entirely.
When I create a new user namespace with clone(), passing the CLONE_NEWNS flag and attempt to invoke mount with an overlayfs filesystem, I'm given permission denied. I can mount any other filesystem though.
Is there a way to work around this/am I missing something?
linux mount overlayfs userns
linux mount overlayfs userns
edited Jun 20 '18 at 21:27
200_success
3,92311528
asked Jun 6 '16 at 17:49
Josh HebertJosh Hebert
211
edited Jun 20 '18 at 21:27
200_success
3,92311528
asked Jun 6 '16 at 17:49
Josh HebertJosh Hebert
211
edited Jun 20 '18 at 21:27
200_success
3,92311528
edited Jun 20 '18 at 21:27
200_success
3,92311528
edited Jun 20 '18 at 21:27
200_success
3,92311528
3,92311528
asked Jun 6 '16 at 17:49
Josh HebertJosh Hebert
211
asked Jun 6 '16 at 17:49
Josh HebertJosh Hebert
211
asked Jun 6 '16 at 17:49
Josh HebertJosh Hebert
211
211
add a comment |
add a comment |
1 Answer
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Its not allowed to mount overlayfs within unprivileged usernamespace. Not sure but if you can try a bind mount of the overlayfs into the usernamespace.
answered Jan 11 at 4:44
shashankshashank
1
add a comment |
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Its not allowed to mount overlayfs within unprivileged usernamespace. Not sure but if you can try a bind mount of the overlayfs into the usernamespace.
answered Jan 11 at 4:44
shashankshashank
1
add a comment |
Its not allowed to mount overlayfs within unprivileged usernamespace. Not sure but if you can try a bind mount of the overlayfs into the usernamespace.
answered Jan 11 at 4:44
shashankshashank
1
add a comment |
Its not allowed to mount overlayfs within unprivileged usernamespace. Not sure but if you can try a bind mount of the overlayfs into the usernamespace.
answered Jan 11 at 4:44
shashankshashank
1
Its not allowed to mount overlayfs within unprivileged usernamespace. Not sure but if you can try a bind mount of the overlayfs into the usernamespace.
answered Jan 11 at 4:44
shashankshashank
1
answered Jan 11 at 4:44
shashankshashank
1
answered Jan 11 at 4:44
shashankshashank
1
answered Jan 11 at 4:44
shashankshashank
1
1
add a comment |
add a comment |
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