CVE-2019-20096
Published: 30 December 2019
In the Linux kernel before 5.1, there is a memory leak in __feat_register_sp() in net/dccp/feat.c, which may cause denial of service, aka CID-1d3ff0950e2b.
From the Ubuntu Security Team
It was discovered that the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel did not properly deallocate memory in certain error conditions. An attacker could possibly use this to cause a denial of service (kernel memory exhaustion).
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux-aws Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1060.62)
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Not vulnerable
(5.3.0-1003.3)
|
|
| focal |
Not vulnerable
(5.4.0-1005.5)
|
|
| trusty |
Released
(4.4.0-1062.66)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Released
(4.4.0-1102.113)
|
|
|
linux-aws-5.0 Launchpad, Ubuntu, Debian |
disco |
Does not exist
|
| bionic |
Released
(5.0.0-1025.28)
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
eoan |
Not vulnerable
(5.3.0-1003.3)
|
| focal |
Not vulnerable
(5.4.0-1005.5)
|
|
| bionic |
Released
(5.0.0-1031.32)
|
|
| disco |
Ignored
(end of life)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Released
(4.15.0-1055.59)
|
|
|
linux-gcp-5.3 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1008.9~18.04.1)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-gcp-edge Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| 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
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
|
linux Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-88.88)
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Not vulnerable
(5.2.0-8.9)
|
|
| focal |
Not vulnerable
(5.4.0-9.12)
|
|
| trusty |
Ignored
(was needed ESM criteria)
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Released
(4.4.0-174.204)
|
|
|
Patches: Introduced by e8ef967a54f401ac5e8637b7f7f8bddb006144c4 |
||
|
linux-aws-hwe Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Released
(4.15.0-1060.62~16.04.1)
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1032.34)
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Not vulnerable
(5.3.0-1002.2)
|
|
| focal |
Not vulnerable
(5.4.0-1006.6)
|
|
| trusty |
Released
(4.15.0-1071.76~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Released
(4.15.0-1071.76)
|
|
|
linux-azure-5.3 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1007.8~18.04.1)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-azure-edge Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Ignored
(end of standard support, was needs-triage)
|
|
|
linux-gke-4.15 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1052.55)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-gke-5.0 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1030.31)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| 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
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-26.28~18.04.1)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Released
(4.15.0-88.88~16.04.1)
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Ignored
(end of life, was needs-triage)
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1053.53)
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Not vulnerable
(5.3.0-1003.3)
|
|
| focal |
Not vulnerable
(5.4.0-1004.4)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Released
(4.4.0-1066.73)
|
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Released
(4.4.0-174.204~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1073.83)
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Released
(4.15.0-1073.83)
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Ignored
(end of standard support, was needs-triage)
|
|
|
linux-oem-5.6 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| eoan |
Does not exist
|
|
| focal |
Not vulnerable
(5.4.0-1002.4)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-oem-osp1 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1039.44)
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Released
(5.0.0-1039.44)
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-oracle Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1033.36)
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Not vulnerable
(5.3.0-1002.2)
|
|
| focal |
Not vulnerable
(5.4.0-1005.5)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Released
(4.15.0-1033.36~16.04.1)
|
|
|
linux-oracle-5.0 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1011.16)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1055.59)
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Not vulnerable
(5.3.0-1005.6)
|
|
| focal |
Not vulnerable
(5.4.0-1004.4)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Released
(4.4.0-1129.138)
|
|
|
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
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1072.79)
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.1~rc4)
|
|
| xenial |
Released
(4.4.0-1133.141)
|
|
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 |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20096
- https://git.kernel.org/linus/1d3ff0950e2b40dc861b1739029649d03f591820
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1d3ff0950e2b40dc861b1739029649d03f591820
- https://ubuntu.com/security/notices/USN-4285-1
- https://ubuntu.com/security/notices/USN-4286-1
- https://ubuntu.com/security/notices/USN-4287-1
- https://ubuntu.com/security/notices/USN-4286-2
- https://ubuntu.com/security/notices/USN-4287-2
- NVD
- Launchpad
- Debian