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| author | Dan Williams <[email protected]> | 2018-02-08 06:34:24 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2018-02-08 20:24:12 +0000 |
| commit | 3968523f855050b8195134da951b87c20bd66130 (patch) | |
| tree | 1bf66a780a1e70748dcbd036281015a1d510c564 /net/tipc | |
| parent | rds: tcp: use rds_destroy_pending() to synchronize netns/module teardown and ... (diff) | |
| download | kernel-3968523f855050b8195134da951b87c20bd66130.tar.gz kernel-3968523f855050b8195134da951b87c20bd66130.zip | |
mpls, nospec: Sanitize array index in mpls_label_ok()
mpls_label_ok() validates that the 'platform_label' array index from a
userspace netlink message payload is valid. Under speculation the
mpls_label_ok() result may not resolve in the CPU pipeline until after
the index is used to access an array element. Sanitize the index to zero
to prevent userspace-controlled arbitrary out-of-bounds speculation, a
precursor for a speculative execution side channel vulnerability.
Cc: <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Eric W. Biederman <[email protected]>
Signed-off-by: Dan Williams <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'net/tipc')
0 files changed, 0 insertions, 0 deletions