Bug 691270 - (CVE-2011-1478) CVE-2011-1478 kernel: gro: reset dev and skb_iff on skb reuse
CVE-2011-1478 kernel: gro: reset dev and skb_iff on skb reuse
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
public=20110202,reported=20110202,sou...
: Security
Depends On: 600350 674585 674588 681970 688311 691272 698058 698059 698060 700015
Blocks:
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Reported: 2011-03-27 22:13 EDT by Eugene Teo (Security Response)
Modified: 2015-07-31 08:37 EDT (History)
14 users (show)

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Doc Type: Bug Fix
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Last Closed: 2015-07-29 10:19:55 EDT
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RHEL 7.3 requirements from Atomic Host:


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Description Eugene Teo (Security Response) 2011-03-27 22:13:47 EDT
There is an issue in the core GRO code where an skb belonging to an unknown VLAN is reused as we don't reset skb->dev in the reuse case. This could result in a NULL pointer dereference.

6d152e23ad1a7a5b40fef1f42e017d66e6115159 gro: reset skb_iif on reuse
66c46d741e2e60f0e8b625b80edb0ab820c46d7a gro: Reset dev pointer on reuse

Acknowledgements:

Red Hat would like to thank Ryan Sweat for reporting this issue.
Comment 2 Eugene Teo (Security Response) 2011-03-27 22:38:19 EDT
Statement:

This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 4 as it did not support Generic Receive Offload (GRO). It has been addressed in Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0429.html, https://rhn.redhat.com/errata/RHSA-2011-0421.html and https://rhn.redhat.com/errata/RHSA-2011-1253.html.
Comment 3 errata-xmlrpc 2011-04-07 22:57:50 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0421 https://rhn.redhat.com/errata/RHSA-2011-0421.html
Comment 4 errata-xmlrpc 2011-04-12 14:20:22 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2011:0429 https://rhn.redhat.com/errata/RHSA-2011-0429.html
Comment 5 errata-xmlrpc 2011-04-13 11:00:26 EDT
This issue has been addressed in following products:

  RHEV-H, V2V and Agents for RHEL-5

Via RHSA-2011:0439 https://rhn.redhat.com/errata/RHSA-2011-0439.html
Comment 8 errata-xmlrpc 2011-09-12 15:45:05 EDT
This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2011:1253 https://rhn.redhat.com/errata/RHSA-2011-1253.html

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