run: Don't allow chroot()

If we don't allow pivot_root() then there seems no reason why we should allow chroot(). Partially fixes GHSA-67h7-w3jq-vh4q. Signed-off-by: Simon McVittie <[email protected]> (cherry picked from commit 8f87696)
debarshiray · Jan 27, 2022 · 26e226e · 26e226e
1 parent b3072a1
commit 26e226e
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/common/flatpak-run.c b/common/flatpak-run.c
@@ -2624,6 +2624,7 @@ setup_seccomp (FlatpakBwrap   *bwrap,
     {SCMP_SYS (umount), EPERM},
     {SCMP_SYS (umount2), EPERM},
     {SCMP_SYS (pivot_root), EPERM},
+    {SCMP_SYS (chroot), EPERM},
 #if defined(__s390__) || defined(__s390x__) || defined(__CRIS__)
     /* Architectures with CONFIG_CLONE_BACKWARDS2: the child stack
      * and flags arguments are reversed so the flags come second */