aboutsummaryrefslogtreecommitdiff
path: root/include/linux/security.h
diff options
context:
space:
mode:
authorDavid Howells <dhowells@redhat.com>2019-08-19 17:17:59 -0700
committerJames Morris <jmorris@namei.org>2019-08-19 21:54:16 -0700
commit9d1f8be5cf42b497a3bddf1d523f2bb142e9318c (patch)
treefc926ba08f6b2b69c2b9341de2a16d2870b25bda /include/linux/security.h
parenta94549dd87f5ea4ca50fee493df08a2dc6256b53 (diff)
downloadlinux-9d1f8be5cf42b497a3bddf1d523f2bb142e9318c.tar.gz
bpf: Restrict bpf when kernel lockdown is in confidentiality mode
bpf_read() and bpf_read_str() could potentially be abused to (eg) allow private keys in kernel memory to be leaked. Disable them if the kernel has been locked down in confidentiality mode. Suggested-by: Alexei Starovoitov <alexei.starovoitov@gmail.com> Signed-off-by: Matthew Garrett <mjg59@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> cc: netdev@vger.kernel.org cc: Chun-Yi Lee <jlee@suse.com> cc: Alexei Starovoitov <alexei.starovoitov@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'include/linux/security.h')
-rw-r--r--include/linux/security.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/security.h b/include/linux/security.h
index 0b2529dbf0f4..e604f4c67f03 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -118,6 +118,7 @@ enum lockdown_reason {
LOCKDOWN_INTEGRITY_MAX,
LOCKDOWN_KCORE,
LOCKDOWN_KPROBES,
+ LOCKDOWN_BPF_READ,
LOCKDOWN_CONFIDENTIALITY_MAX,
};