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authorJann Horn <jannh@google.com>2019-04-10 19:55:58 +0300
committerMicah Morton <mortonm@chromium.org>2019-07-15 18:07:19 +0300
commit71a98971b932174e121bc19056475c601598132f (patch)
treefb3a1ee4a8b7cdec81b2f0671524a25af4b5b016 /fs/ext2/xattr.h
parent78ae7df96d647627ceae0b65eea9e4f83a0a4b66 (diff)
downloadlinux-71a98971b932174e121bc19056475c601598132f.tar.xz
LSM: SafeSetID: fix userns handling in securityfs
Looking at current_cred() in write handlers is bad form, stop doing that. Also, let's just require that the write is coming from the initial user namespace. Especially SAFESETID_WHITELIST_FLUSH requires privilege over all namespaces, and SAFESETID_WHITELIST_ADD should probably require it as well. Signed-off-by: Jann Horn <jannh@google.com> Signed-off-by: Micah Morton <mortonm@chromium.org>
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