Thread (4 messages) 4 messages, 3 authors, 4d ago

Re: [PATCH net v2] net: qualcomm: rmnet: validate MAP frame length before ingress parsing

From: patchwork-bot+netdevbpf@kernel.org
Date: 2026-07-06 10:50:40
Also in: lkml

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni [off-list ref]:

On Tue, 30 Jun 2026 10:41:09 -0700 you wrote:
When ingress deaggregation is disabled, rmnet_map_ingress_handler() passes
the skb straight to __rmnet_map_ingress_handler(), skipping the length
validation that rmnet_map_deaggregate() performs on the aggregated path.
The parser then dereferences the MAP header and csum header/trailer based on
the on-wire pkt_len without checking skb->len, so a short frame is read out
of bounds:

[...]
Here is the summary with links:
  - [net,v2] net: qualcomm: rmnet: validate MAP frame length before ingress parsing
    https://git.kernel.org/netdev/net/c/f0f1887a9e30

You are awesome, thank you!
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