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authorKP Singh <kpsingh@google.com>2020-06-22 00:21:35 +0200
committerJames Morris <jmorris@namei.org>2020-06-23 16:39:23 -0700
commit23e390cdbe6f85827a43d38f9288dcd3066fa376 (patch)
treea08d76e08595224eee8ae4e44bfd238200ee3002 /fs/nfs/dir.c
parent4bc799dcb67066e0531004d5bdbe755bb02b5488 (diff)
security: Fix hook iteration and default value for inode_copy_up_xattr
inode_copy_up_xattr returns 0 to indicate the acceptance of the xattr and 1 to reject it. If the LSM does not know about the xattr, it's expected to return -EOPNOTSUPP, which is the correct default value for this hook. BPF LSM, currently, uses 0 as the default value and thereby falsely allows all overlay fs xattributes to be copied up. The iteration logic is also updated from the "bail-on-fail" call_int_hook to continue on the non-decisive -EOPNOTSUPP and bail out on other values. Fixes: 98e828a0650f ("security: Refactor declaration of LSM hooks") Signed-off-by: KP Singh <kpsingh@google.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'fs/nfs/dir.c')
0 files changed, 0 insertions, 0 deletions