Bug 1062577 (CVE-2014-0055)

Summary: CVE-2014-0055 kernel: vhost-net: insufficient handling of error conditions in get_rx_bufs()
Product: [Other] Security Response Reporter: Petr Matousek <pmatouse>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: aquini, dhoward, fhrbata, jasowang, jkurik, kernel-mgr, lwang, mst, nobody, npajkovs, security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=important,public=20140325,reported=20140206,source=redhat,cvss2=5.2/AV:A/AC:M/Au:S/C:N/I:N/A:C,rhel-5/kernel=notaffected,rhel-6/kernel=affected,mrg-2/realtime-kernel=notaffected,fedora-all/kernel=affected,rhel-7/kernel=notaffected
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 1058677, 1062579, 1070940, 1081503    
Bug Blocks: 1062618    

Description Petr Matousek 2014-02-07 06:13:59 EST
A flaw was found in the way get_rx_bufs() function handled error conditions
reported by vhost_get_vq_desc().

A privileged user in the guest could use this flaw to crash the host.
Comment 1 Petr Matousek 2014-02-07 06:17:17 EST

This issue does not affect Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2.

This issue affects the versions of Linux kernel as shipped with Red Hat Enterprise Linux 6. Future kernel updates for Red Hat Enterprise Linux 6 may address this issue.
Comment 3 Petr Matousek 2014-03-27 09:14:03 EDT
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1081503]
Comment 4 Josh Boyer 2014-03-27 12:03:57 EDT
Upstream patch submission:

Comment 5 errata-xmlrpc 2014-03-31 12:38:49 EDT
This issue has been addressed in following products:

  RHEV-H and Agents for RHEL-6

Via RHSA-2014:0339 https://rhn.redhat.com/errata/RHSA-2014-0339.html
Comment 6 errata-xmlrpc 2014-04-01 04:22:58 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:0328 https://rhn.redhat.com/errata/RHSA-2014-0328.html
Comment 7 Fedora Update System 2014-04-04 05:45:58 EDT
kernel-3.13.8-200.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 8 Fedora Update System 2014-04-08 20:51:34 EDT
kernel-3.13.9-100.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.