[ipxe-devel] [Etherboot-developers] [PATCH 7/7] [ipv4] Limit number of fragment buffers

Michael Brown mbrown at fensystems.co.uk
Wed Nov 16 15:31:31 UTC 2011

On Wednesday 16 Nov 2011 13:56:53 Michal Kubecek wrote:
> For every (first) IPv4 fragment received, a buffer of size
> IPV4_FRAG_IOB_SIZE (currently 1500 bytes) is allocated. Limiting the
> number of fragment buffers prevents memory exhaustion if too many
> fragments are received without being assembled (e.g. because of wrongly
> configured firewall).

IPv4 fragmentation reassembly was already fixed back in July:


You are working on the obsolete and unmaintained gPXE codebase.  Please 
upgrade to iPXE, where many of the bugs in gPXE have already been fixed.


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