diff options
| author | Avi Weiss <thnkslprpt@gmail.com> | 2026-10-31 13:41:35 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2026-11-04 15:21:07 +0100 |
| commit | 24614e72df484ad50ecba98aaa88c7df2448c122 (patch) | |
| tree | f9e31a312e979483740ed35d2e31da1e6716bf12 /include | |
| parent | c4328134f3f7c2ce141121a8f82a5ec0cc8a709c (diff) | |
net: skbuff: reject zero MPLS TTL before decrementing
skb_mpls_dec_ttl() decrements the u8 TTL before checking whether it
expired. An incoming TTL of zero wraps to 255, causing the TC MPLS
dec_ttl action to pass an expired packet instead of dropping it.
Reject a zero TTL before the decrement while preserving the existing
behavior for TTL one and valid TTL values.
Fixes: 2a2ea50870ba ("net: sched: add mpls manipulation actions to TC")
Signed-off-by: Avi Weiss <thnkslprpt@gmail.com>
Reviewed-by: Xia Yan <yanxia@cmss.chinamobile.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20261031114135.3784868-2-thnkslprpt@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions