Bug 149589 - CAN-2005-0209 netfilter SKB problem
CAN-2005-0209 netfilter SKB problem
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel (Show other bugs)
All Linux
medium Severity high
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Assigned To: David Miller
Brian Brock
: Security
Depends On:
  Show dependency treegraph
Reported: 2005-02-24 05:46 EST by Mark J. Cox
Modified: 2007-11-30 17:07 EST (History)
3 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2005-04-19 14:52:25 EDT
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)

External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2005:366 high SHIPPED_LIVE Important: kernel security update 2005-04-19 00:00:00 EDT

  None (edit)
Description Mark J. Cox 2005-02-24 05:46:52 EST
"If we forward a fragmented packet, we can have ip_summed set to
CHECKSUM_HW or similar.  This is fine for local protocol processing,
but once if we are forwarding this packet we want to reset ip_summed
to CHECKSUM_NONE."  This allows you to crash a host remotely using bad
fragments but only affects certain NICs.  Dave Miller said "Acenic and
SunGEM are the only two cards affected which are in widespread use."

Simple patch:
Comment 1 Josh Bressers 2005-04-19 14:52:25 EDT
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.


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