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| author | Davide Caratti <dcaratti@redhat.com> | 2020-12-03 10:37:52 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-08 10:40:27 +0100 |
| commit | 8f92330b08735e9a75ef1a8f6721c8ac51d03afb (patch) | |
| tree | a00aa471e690ddf6b1f6aed2d80908b236c6706e /include | |
| parent | 1086f789060ab968314b93ddbee91547f276b5d9 (diff) | |
net/sched: act_mpls: ensure LSE is pullable before reading it
[ Upstream commit 9608fa653059c3f72faab0c148ac8773c46e7314 ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions