FreeBSD Bugzilla – Attachment 178417 Details for
Bug 212283
oversized IP datagrams on raw socket with IP_RAWOUTPUT hang network interface drivers
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[patch]
Proposed patch to enforce consistent lengths
file_212283.txt (text/plain), 529 bytes, created by
Michael Tuexen
on 2016-12-31 12:40:27 UTC
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Description:
Proposed patch to enforce consistent lengths
Filename:
MIME Type:
Creator:
Michael Tuexen
Created:
2016-12-31 12:40:27 UTC
Size:
529 bytes
patch
obsolete
>Index: sys/netinet/raw_ip.c >=================================================================== >--- sys/netinet/raw_ip.c (revision 310879) >+++ sys/netinet/raw_ip.c (working copy) >@@ -508,7 +508,7 @@ > * and don't allow packet length sizes that will crash. > */ > if (((ip->ip_hl != (sizeof (*ip) >> 2)) && inp->inp_options) >- || (ntohs(ip->ip_len) > m->m_pkthdr.len) >+ || (ntohs(ip->ip_len) != m->m_pkthdr.len) > || (ntohs(ip->ip_len) < (ip->ip_hl << 2))) { > INP_RUNLOCK(inp); > m_freem(m);
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bug 212283
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