Bug 691270 (CVE-2011-1478)

Summary: CVE-2011-1478 kernel: gro: reset dev and skb_iff on skb reuse
Product: [Other] Security Response Reporter: Eugene Teo (Security Response) <eteo>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: arozansk, bhu, dhoward, jkacur, kernel-mgr, kmcmartin, lgoncalv, lwang, pmatouse, rkhan, rt-maint, tcallawa, vkrizan, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-07-29 14:19:55 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 600350, 674585, 674588, 681970, 688311, 691272, 698058, 698059, 698060, 700015    
Bug Blocks:    

Description Eugene Teo (Security Response) 2011-03-28 02:13:47 UTC
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


Red Hat would like to thank Ryan Sweat for reporting this issue.

Comment 2 Eugene Teo (Security Response) 2011-03-28 02:38:19 UTC

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 2011-04-08 02:57:50 UTC
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 18:20:22 UTC
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 15:00:26 UTC
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 19:45:05 UTC
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