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| author |   Davide Caratti <dcaratti@redhat.com> | 2020-12-03 10:37:52 +0100 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2020-12-03 11:13:37 -0800 |
| commit | 9608fa653059c3f72faab0c148ac8773c46e7314 (patch) | |
| tree | 6ba66312b3eaa2d0439d397a6527ee5a3daccfe1 /scripts/bpf_helpers_doc.py | |
| parent | net: openvswitch: ensure LSE is pullable before reading it (diff) | |
| download | wireguard-linux-9608fa653059c3f72faab0c148ac8773c46e7314.tar.xz wireguard-linux-9608fa653059c3f72faab0c148ac8773c46e7314.zip | |
net/sched: act_mpls: ensure LSE is pullable before reading it
when 'act_mpls' is used to mangle the LSE, the current value is read from
the packet dereferencing 4 bytes at mpls_hdr(): ensure that the label is
contained in the skb "linear" area.
Found by code inspection.
v2:
- use MPLS_HLEN instead of sizeof(new_lse), thanks to Jakub Kicinski
Fixes: 2a2ea50870ba ("net: sched: add mpls manipulation actions to TC")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Guillaume Nault <gnault@redhat.com>
Link: https://lore.kernel.org/r/3243506cba43d14858f3bd21ee0994160e44d64a.1606987058.git.dcaratti@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'scripts/bpf_helpers_doc.py')
0 files changed, 0 insertions, 0 deletions