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Bug 765346 (CVE-2020-27827) - <net-misc/openvswitch-2.14.1: Denial of service (CVE-2020-27827)
Summary: <net-misc/openvswitch-2.14.1: Denial of service (CVE-2020-27827)
Alias: CVE-2020-27827
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor (vote)
Assignee: Gentoo Security
Whiteboard: B3 [glsa+ cve]
Depends on: 765073
  Show dependency tree
Reported: 2021-01-13 19:40 UTC by Sam James
Modified: 2023-11-26 10:09 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---


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Description Sam James archtester Gentoo Infrastructure gentoo-dev Security 2021-01-13 19:40:46 UTC
"Multiple versions of Open vSwitch are vulnerable to denial of service
attacks in which crafted LLDP packets could cause memory to be lost
when allocating data to handle specific optional TLVs.  Triggering the
vulnerability requires LLDP processing to be enabled for a specific
port.  Open vSwitch versions before 2.5.x are not vulnerable.

The Common Vulnerabilities and Exposures project (
previously assigned the identifier CVE-2020-27827 to this issue for
the `lldpd` project, and the Open vSwitch project."
Comment 1 Matthew Thode ( prometheanfire ) archtester Gentoo Infrastructure gentoo-dev Security 2021-01-13 20:36:39 UTC
this is fixed (2.14.1 added and fast stabled with cleanup)
Comment 2 Thomas Deutschmann (RETIRED) gentoo-dev 2021-05-31 21:01:49 UTC
Waiting for bug 769995.
Comment 3 NATTkA bot gentoo-dev 2021-07-29 17:24:33 UTC Comment hidden (obsolete)
Comment 4 NATTkA bot gentoo-dev 2021-07-29 17:33:04 UTC Comment hidden (obsolete)
Comment 5 NATTkA bot gentoo-dev 2021-07-29 17:40:55 UTC Comment hidden (obsolete)
Comment 6 NATTkA bot gentoo-dev 2021-07-29 17:49:05 UTC Comment hidden (obsolete)
Comment 7 NATTkA bot gentoo-dev 2021-07-29 18:05:00 UTC Comment hidden (obsolete)
Comment 8 NATTkA bot gentoo-dev 2021-07-29 18:13:19 UTC
Package list is empty or all packages have requested keywords.
Comment 9 Larry the Git Cow gentoo-dev 2023-11-26 10:07:48 UTC
The bug has been referenced in the following commit(s):

commit 6109db58da8356109819f2e31a15acb75bbd5b61
Author:     GLSAMaker <>
AuthorDate: 2023-11-26 10:06:58 +0000
Commit:     Hans de Graaff <>
CommitDate: 2023-11-26 10:07:30 +0000

    [ GLSA 202311-16 ] Open vSwitch: Multiple Vulnerabilities
    Signed-off-by: GLSAMaker <>
    Signed-off-by: Hans de Graaff <>

 glsa-202311-16.xml | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)