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| author |   Davide Caratti <dcaratti@redhat.com> | 2020-12-03 10:58:21 +0100 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2020-12-03 11:13:21 -0800 |
| commit | 13de4ed9e3a9ccbe54d05f7d5c773f69ecaf6c64 (patch) | |
| tree | 3c31c25a52609be88914c1b5f78aa8d4c06f31f4 /scripts/bpf_helpers_doc.py | |
| parent | Merge tag 'wireless-drivers-2020-12-03' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers (diff) | |
| download | wireguard-linux-13de4ed9e3a9ccbe54d05f7d5c773f69ecaf6c64.tar.xz wireguard-linux-13de4ed9e3a9ccbe54d05f7d5c773f69ecaf6c64.zip | |
net: skbuff: ensure LSE is pullable before decrementing the MPLS ttl
skb_mpls_dec_ttl() reads the LSE without ensuring that it is contained in
the skb "linear" area. Fix this calling pskb_may_pull() before reading the
current ttl.
Found by code inspection.
Fixes: 2a2ea50870ba ("net: sched: add mpls manipulation actions to TC")
Reported-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Link: https://lore.kernel.org/r/53659f28be8bc336c113b5254dc637cc76bbae91.1606987074.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