[PATCH v1 0/1] Unprivileged chroot

Mickaël Salaün mic at digikod.net
Wed Mar 10 16:09:59 UTC 2021


The chroot system call is currently limited to be used by processes with
the CAP_SYS_CHROOT capability.  This protects against malicious
procesess willing to trick SUID-like binaries.  The following patch
allows unprivileged users to safely use chroot(2).

This patch is a follow-up of a previous one sent by Andy Lutomirski some
time ago:

This patch can be applied on top of v5.12-rc2 .  I would really
appreciate constructive reviews.


Mickaël Salaün (1):
  fs: Allow no_new_privs tasks to call chroot(2)

 fs/open.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 61 insertions(+), 3 deletions(-)

base-commit: a38fd8748464831584a19438cbb3082b5a2dab15

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