Bug 1984473 (CVE-2021-36980) - CVE-2021-36980 openvswitch: use-after-free in decode_NXAST_RAW_ENCAP during the decoding of a RAW_ENCAP action
Summary: CVE-2021-36980 openvswitch: use-after-free in decode_NXAST_RAW_ENCAP during t...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-36980
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1984475 1984476 1984477 1984478 1984480 1987071 1987072 1987073 1987075 1987076 1987077 1987078 1987079 1987080 1988258 1989775 1989776
Blocks: 1984479
TreeView+ depends on / blocked
 
Reported: 2021-07-21 14:16 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-10-20 09:52 UTC (History)
40 users (show)

Fixed In Version: openvsiwtch 2.13.4, openvswitch 2.15.1
Doc Type: If docs needed, set a value
Doc Text:
Open vSwitch (aka openvswitch) has a use-after-free in decode_NXAST_RAW_ENCAP (called from ofpact_decode and ofpacts_decode) during the decoding of a RAW_ENCAP action.
Clone Of:
Environment:
Last Closed: 2021-10-18 20:08:24 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:3758 0 None None None 2021-10-18 16:51:56 UTC
Red Hat Product Errata RHSA-2021:3942 0 None None None 2021-10-20 09:52:31 UTC

Description Guilherme de Almeida Suckevicz 2021-07-21 14:16:37 UTC 
Open vSwitch (aka openvswitch) 2.11.0 through 2.15.0 has a use-after-free in decode_NXAST_RAW_ENCAP (called from ofpact_decode and ofpacts_decode) during the decoding of a RAW_ENCAP action.

Reference:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27851

Upstream patches:
https://github.com/openvswitch/ovs/commit/77cccc74deede443e8b9102299efc869a52b65b2
https://github.com/openvswitch/ovs/commit/65c61b0c23a0d474696d7b1cea522a5016a8aeb3
https://github.com/openvswitch/ovs/commit/38744b1bcb022c611712527f039722115300f58f
https://github.com/openvswitch/ovs/commit/6d67310f4d2524b466b98f05ebccc1add1e8cf35
https://github.com/openvswitch/ovs/commit/8ce8dc34b5f73b30ce0c1869af9947013c3c6575
https://github.com/openvswitch/ovs/commit/9926637a80d0d243dbf9c49761046895e9d1a8e2
Comment 1 Guilherme de Almeida Suckevicz 2021-07-21 14:18:23 UTC 
Created dpdk tracking bugs for this issue:

Affects: fedora-all [bug 1984477]


Created lldpd tracking bugs for this issue:

Affects: epel-7 [bug 1984480]
Affects: fedora-all [bug 1984478]


Created openvswitch tracking bugs for this issue:

Affects: fedora-all [bug 1984475]


Created rdo-openvswitch tracking bugs for this issue:

Affects: openstack-rdo [bug 1984476]
Comment 3 Huzaifa S. Sidhpurwala 2021-07-29 05:03:19 UTC 
Note:

This issue was introduced by the following commit https://github.com/openvswitch/ovs/commit/418a7a84245f5fbe589dd1267463fc9ba27a1dd6 , therefore only versions from 2.11.0 to 2.15.0 are affected by this flaw.
Comment 8 errata-xmlrpc 2021-10-18 16:51:53 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.9

Via RHSA-2021:3758 https://access.redhat.com/errata/RHSA-2021:3758
Comment 9 Product Security DevOps Team 2021-10-18 20:08:24 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-36980
Comment 10 errata-xmlrpc 2021-10-20 09:52:28 UTC 
This issue has been addressed in the following products:

  Red Hat Virtualization 4 for Red Hat Enterprise Linux 7

Via RHSA-2021:3942 https://access.redhat.com/errata/RHSA-2021:3942
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