From: Eric Dumazet <edumazet@google.com>
To: "David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>
Cc: Simon Horman <horms@kernel.org>,
Jamal Hadi Salim <jhs@mojatatu.com>,
Cong Wang <xiyou.wangcong@gmail.com>,
Jiri Pirko <jiri@resnulli.us>,
GangMin Kim <km.kim1503@gmail.com>,
netdev@vger.kernel.org, eric.dumazet@gmail.com,
Eric Dumazet <edumazet@google.com>
Subject: [PATCH net 0/2] net: fix potential crash in net/sched/cls_u32.c
Date: Tue, 27 Jan 2026 14:44:31 +0000 [thread overview]
Message-ID: <20260127144433.196836-1-edumazet@google.com> (raw)
GangMin Kim provided a report and a repro fooling u32_classify().
Add skb_header_pointer_careful() variant of skb_header_pointer()
and use it in net/sched/cls_u32.c.
Later we can also use it in net/sched/act_pedit.c
Eric Dumazet (2):
net: add skb_header_pointer_careful() helper
net/sched: cls_u32: use skb_header_pointer_careful()
include/linux/skbuff.h | 12 ++++++++++++
net/sched/cls_u32.c | 13 ++++++-------
2 files changed, 18 insertions(+), 7 deletions(-)
--
2.53.0.rc1.217.geba53bf80e-goog
next reply other threads:[~2026-01-27 14:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-27 14:44 Eric Dumazet [this message]
2026-01-27 14:44 ` [PATCH net 1/2] net: add skb_header_pointer_careful() helper Eric Dumazet
2026-01-28 2:55 ` [net,1/2] " Jakub Kicinski
2026-01-28 14:01 ` Eric Dumazet
2026-01-27 14:44 ` [PATCH net 2/2] net/sched: cls_u32: use skb_header_pointer_careful() Eric Dumazet
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