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Stable Linux kernels fix a flaw that can corrupt IPv4 network headers

lwn.net by jzb Editor score 7/10

The stable kernel releases fix a flaw in skb_checksum_help() that could let an IPv4 packet with bad checksum metadata corrupt the network header. Kernel operators should assess their exposure and apply the relevant stable update.

What

- Seven stable Linux kernel releases include a fix for a flaw in skb_checksum_help().

How

- Bad checksum metadata on an IPv4 packet could corrupt the network header, according to the patch author.

Why it matters

- Stable-kernel users are advised to upgrade to receive the fix for this network-header corruption flaw.

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