CVE-2019-20811
Published: 3 June 2020
An issue was discovered in the Linux kernel before 5.0.6. In rx_queue_add_kobject() and netdev_queue_add_kobject() in net/core/net-sysfs.c, a reference count is mishandled, aka CID-a3e23f719f5c.
From the Ubuntu Security Team
Yue Haibing discovered that the Linux kernel did not properly handle reference counting in sysfs for network devices in some situations. A local attacker could possibly use this to cause a denial of service.
Priority
Status
Package | Release | Status |
---|---|---|
linux
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-60.67)
|
eoan |
Not vulnerable
(5.0.0-13.14)
|
|
focal |
Not vulnerable
(5.4.0-9.12)
|
|
groovy |
Not vulnerable
(5.4.0-26.30)
|
|
trusty |
Ignored
(was needed ESM criteria)
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Released
(4.4.0-190.220)
|
|
Patches:
Introduced by
fe8222406c8277a21172479d3a8283d31c209028
Introduced by
1d24eb4815d1e0e8b451ecc546645f8ef1176d4f
|
||
linux-aws
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1047.49)
|
eoan |
Not vulnerable
(5.0.0-1004.4)
|
|
focal |
Not vulnerable
(5.4.0-1005.5)
|
|
groovy |
Not vulnerable
(5.4.0-1009.9)
|
|
trusty |
Released
(4.4.0-1078.82)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Released
(4.4.0-1114.127)
|
|
linux-aws-5.0
Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-aws-5.3
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1016.17~18.04.1)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-aws-5.4
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4.0-1018.18~18.04.1)
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-aws-hwe
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Released
(4.15.0-1047.49~16.04.1)
|
|
linux-azure
Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
eoan |
Not vulnerable
(5.0.0-1004.4)
|
|
focal |
Not vulnerable
(5.4.0-1006.6)
|
|
groovy |
Not vulnerable
(5.4.0-1010.10)
|
|
trusty |
Released
(4.15.0-1059.64~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Released
(4.15.0-1056.61)
|
|
linux-azure-4.15
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1082.92)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-azure-5.3
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1007.8~18.04.1)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-azure-5.4
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4.0-1020.20~18.04.1)
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-azure-edge
Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-dell300x
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1005.8)
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-gcp
Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
eoan |
Not vulnerable
(5.0.0-1004.4)
|
|
focal |
Not vulnerable
(5.4.0-1005.5)
|
|
groovy |
Not vulnerable
(5.4.0-1009.9)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Released
(4.15.0-1041.43)
|
|
linux-gcp-4.15
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1071.81)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-gcp-5.3
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1008.9~18.04.1)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-gcp-5.4
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4.0-1019.19~18.04.2)
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-gcp-edge
Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-gke-4.15
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1041.43)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-gke-5.0
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.0.0-1011.11~18.04.1)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-gke-5.3
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1011.12~18.04.1)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-gke-5.4
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4.0-1025.25~18.04.1)
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-gkeop
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Not vulnerable
(5.4.0-1008.9)
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-gkeop-5.4
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4.0-1001.1)
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-hwe
Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-23.24~18.04.1)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Released
(4.15.0-60.67~16.04.1)
|
|
linux-hwe-5.4
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4.0-37.41~18.04.1)
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-hwe-5.8
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Not vulnerable
(5.8.0-23.24~20.04.1)
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-hwe-edge
Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Ignored
(end of life, was needs-triage)
|
|
linux-kvm
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1043.43)
|
eoan |
Not vulnerable
(5.0.0-1004.4)
|
|
focal |
Not vulnerable
(5.4.0-1004.4)
|
|
groovy |
Not vulnerable
(5.4.0-1009.9)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Released
(4.4.0-1080.87)
|
|
linux-lts-trusty
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-lts-xenial
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Released
(4.4.0-190.220~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-oem
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1056.65)
|
eoan |
Ignored
(end of life, was pending)
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Ignored
(end of standard support, was needs-triage)
|
|
linux-oem-5.10
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Not vulnerable
(5.10.0-1008.9)
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-oem-5.6
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
eoan |
Does not exist
|
|
focal |
Not vulnerable
(5.6.0-1007.7)
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-oem-osp1
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.0.0-1010.11)
|
eoan |
Not vulnerable
(5.0.0-1010.11)
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-oracle
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1022.25)
|
eoan |
Not vulnerable
(5.3.0-1002.2)
|
|
focal |
Not vulnerable
(5.4.0-1005.5)
|
|
groovy |
Not vulnerable
(5.4.0-1009.9)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Released
(4.15.0-1022.25~16.04.1)
|
|
linux-oracle-5.0
Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-oracle-5.3
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1011.12~18.04.1)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-oracle-5.4
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4.0-1019.19~18.04.1)
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-raspi
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
eoan |
Does not exist
|
|
focal |
Not vulnerable
(5.4.0-1007.7)
|
|
groovy |
Not vulnerable
(5.4.0-1008.8)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-raspi-5.4
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4.0-1013.13~18.04.1)
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-raspi2
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1044.47)
|
eoan |
Not vulnerable
(5.0.0-1006.6)
|
|
focal |
Ignored
(end of life, was needs-triage)
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Released
(4.4.0-1139.148)
|
|
linux-raspi2-5.3
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1017.19~18.04.1)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-riscv
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
eoan |
Does not exist
|
|
focal |
Not vulnerable
(5.4.0-24.28)
|
|
groovy |
Not vulnerable
(5.4.0-24.28)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Does not exist
|
|
linux-snapdragon
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1062.69)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.1~rc3)
|
|
xenial |
Released
(4.4.0-1143.152)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.5 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | High |
Availability impact | None |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
References
- https://git.kernel.org/linus/a3e23f719f5c4a38ffb3d30c8d7632a4ed8ccd9e
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.6
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a3e23f719f5c4a38ffb3d30c8d7632a4ed8ccd9e
- https://ubuntu.com/security/notices/USN-4527-1
- https://www.cve.org/CVERecord?id=CVE-2019-20811
- NVD
- Launchpad
- Debian