CVE-2019-20422
Published: 27 January 2020
In the Linux kernel before 5.3.4, fib6_rule_lookup in net/ipv6/ip6_fib.c mishandles the RT6_LOOKUP_F_DST_NOREF flag in a reference-count decision, leading to (for example) a crash that was identified by syzkaller, aka CID-7b09c2d052db.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
upstream |
Released
(5.4~rc1)
|
| trusty |
Not vulnerable
(3.11.0-12.19)
|
|
| xenial |
Not vulnerable
(4.2.0-16.19)
|
|
| bionic |
Not vulnerable
(4.13.0-16.19)
|
|
| eoan |
Released
(5.3.0-22.24)
|
|
|
Patches: Introduced by d64a1f574a2957b4bcb06452d36cc1c6bf16e9fc |
||
|
linux-hwe Launchpad, Ubuntu, Debian |
upstream |
Released
(5.4~rc1)
|
| trusty |
Does not exist
|
|
| xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
| bionic |
Not vulnerable
(4.18.0-13.14~18.04.1)
|
|
| eoan |
Does not exist
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
upstream |
Released
(5.4~rc1)
|
| trusty |
Does not exist
|
|
| xenial |
Ignored
(end of life, was needs-triage)
|
|
| bionic |
Ignored
(end of life, was needs-triage)
|
|
| eoan |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
upstream |
Released
(5.4~rc1)
|
| trusty |
Not vulnerable
(4.4.0-13.29~14.04.1)
|
|
| xenial |
Does not exist
|
|
| bionic |
Does not exist
|
|
| eoan |
Does not exist
|
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
upstream |
Released
(5.4~rc1)
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| bionic |
Does not exist
|
|
| eoan |
Does not exist
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
upstream |
Released
(5.4~rc1)
|
| trusty |
Does not exist
|
|
| xenial |
Ignored
(end of standard support, was needs-triage)
|
|
| bionic |
Not vulnerable
(4.15.0-1002.3)
|
|
| eoan |
Not vulnerable
(4.15.0-1035.40)
|
|
|
linux-oem-osp1 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.0.0-1010.11)
|
| eoan |
Not vulnerable
(5.0.0-1010.11)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.4~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
upstream |
Released
(5.4~rc1)
|
| trusty |
Does not exist
|
|
| xenial |
Not vulnerable
(4.4.0-1004.9)
|
|
| bionic |
Not vulnerable
(4.15.0-1002.2)
|
|
| eoan |
Released
(5.3.0-1007.8)
|
|
|
linux-aws Launchpad, Ubuntu, Debian |
upstream |
Released
(5.4~rc1)
|
| trusty |
Not vulnerable
(4.4.0-1002.2)
|
|
| xenial |
Not vulnerable
(4.4.0-1001.10)
|
|
| bionic |
Not vulnerable
(4.15.0-1001.1)
|
|
| eoan |
Released
(5.3.0-1007.8)
|
|
|
linux-aws-5.0 Launchpad, Ubuntu, Debian |
upstream |
Released
(5.4~rc1)
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| bionic |
Not vulnerable
(5.0.0-1021.24~18.04.1)
|
|
| eoan |
Does not exist
|
|
|
linux-aws-hwe Launchpad, Ubuntu, Debian |
upstream |
Released
(5.4~rc1)
|
| trusty |
Does not exist
|
|
| xenial |
Not vulnerable
(4.15.0-1030.31~16.04.1)
|
|
| bionic |
Does not exist
|
|
| eoan |
Does not exist
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
upstream |
Released
(5.4~rc1)
|
| trusty |
Not vulnerable
(4.15.0-1023.24~14.04.1)
|
|
| xenial |
Not vulnerable
(4.11.0-1009.9)
|
|
| bionic |
Not vulnerable
(4.15.0-1002.2)
|
|
| eoan |
Released
(5.3.0-1007.8)
|
|
|
linux-azure-5.3 Launchpad, Ubuntu, Debian |
trusty |
Does not exist
|
| bionic |
Not vulnerable
(5.3.0-1007.8~18.04.1)
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.4~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gke-5.0 Launchpad, Ubuntu, Debian |
trusty |
Does not exist
|
| xenial |
Does not exist
|
|
| bionic |
Not vulnerable
(5.0.0-1011.11~18.04.1)
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.4~rc1)
|
|
|
linux-oem-5.4 Launchpad, Ubuntu, Debian |
trusty |
Does not exist
|
| bionic |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.4~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gke-5.3 Launchpad, Ubuntu, Debian |
upstream |
Released
(5.4~rc1)
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| bionic |
Not vulnerable
(5.3.0-1011.12~18.04.1)
|
|
| eoan |
Does not exist
|
|
|
linux-azure-edge Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.4~rc1)
|
|
| xenial |
Ignored
(end of standard support, was needs-triage)
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1001.1)
|
| eoan |
Released
(5.3.0-1008.9)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.4~rc1)
|
|
| xenial |
Not vulnerable
(4.10.0-1004.4)
|
|
|
linux-gcp-5.3 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1008.9~18.04.1)
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.4~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gcp-edge Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.4~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gke-4.15 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1030.32)
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.4~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-oracle Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1007.9)
|
| eoan |
Released
(5.3.0-1006.7)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.4~rc1)
|
|
| xenial |
Not vulnerable
(4.15.0-1007.9~16.04.1)
|
|
|
linux-oracle-5.0 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.0.0-1007.12~18.04.1)
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.4~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.13.0-1005.5)
|
| eoan |
Released
(5.3.0-1012.14)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.4~rc1)
|
|
| xenial |
Not vulnerable
(4.2.0-1013.19)
|
|
|
linux-raspi2-5.3 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1017.19~18.04.1)
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.4~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.4.0-1077.82)
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.4~rc1)
|
|
| xenial |
Not vulnerable
(4.4.0-1012.12)
|
|
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 | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |