CVE-2020-11565
Published: 6 April 2020
** DISPUTED ** An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.”.
From the Ubuntu Security Team
It was discovered that the linux kernel did not properly validate certain mount options to the tmpfs virtual memory file system. A local attacker with the ability to specify mount options could use this to cause a denial of service (system crash).
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
focal |
Released
(5.4.0-31.35)
|
| bionic |
Released
(4.15.0-101.102)
|
|
| eoan |
Released
(5.3.0-53.47)
|
|
| trusty |
Ignored
(was needed ESM criteria)
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Released
(4.4.0-179.209)
|
|
|
Patches: Introduced by 095f1fc4ebf36c64fddf9b6db29b1ab5517378e6 |
||
|
linux-azure Launchpad, Ubuntu, Debian |
focal |
Released
(5.4.0-1012.12)
|
| bionic |
Ignored
(end of life, was needs-triage)
|
|
| eoan |
Released
(5.3.0-1022.23)
|
|
| trusty |
Ignored
(was needed ESM criteria)
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Released
(4.15.0-1083.93~16.04.1)
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
focal |
Released
(5.4.0-1011.11)
|
| bionic |
Ignored
(end of life, was needs-triage)
|
|
| eoan |
Released
(5.3.0-1020.22)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Released
(4.15.0-1071.81~16.04.1)
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
focal |
Released
(5.4.0-1011.11)
|
| bionic |
Released
(4.15.0-1060.61)
|
|
| eoan |
Released
(5.3.0-1017.19)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Released
(4.4.0-1071.78)
|
|
|
linux-oracle Launchpad, Ubuntu, Debian |
focal |
Released
(5.4.0-1011.11)
|
| bionic |
Released
(4.15.0-1039.43)
|
|
| eoan |
Released
(5.3.0-1018.20)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Released
(4.15.0-1039.43~16.04.1)
|
|
|
linux-raspi Launchpad, Ubuntu, Debian |
focal |
Released
(5.4.0-1011.11)
|
| bionic |
Does not exist
|
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
focal |
Ignored
(end of life, was needs-triage)
|
| bionic |
Released
(4.15.0-1062.66)
|
|
| eoan |
Released
(5.3.0-1025.27)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Released
(4.4.0-1133.142)
|
|
|
linux-riscv Launchpad, Ubuntu, Debian |
focal |
Released
(5.4.0-26.30)
|
| bionic |
Does not exist
|
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-aws Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1067.71)
|
| eoan |
Released
(5.3.0-1019.21)
|
|
| focal |
Released
(5.4.0-1011.11)
|
|
| trusty |
Released
(4.4.0-1067.71)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| xenial |
Released
(4.4.0-1107.118)
|
|
| upstream |
Released
(5.7~rc1)
|
|
|
linux-aws-5.0 Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-aws-5.3 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-1019.21~18.04.1)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-azure-4.15 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1083.93)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| 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
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-aws-hwe Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Released
(4.15.0-1067.71~16.04.1)
|
|
|
linux-azure-5.3 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-1022.23~18.04.1)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| 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
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| 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
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gcp-4.15 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1071.81)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gcp-5.3 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-1020.22~18.04.1)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| 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
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| 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
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gke-4.15 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1059.62)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gke-5.0 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1037.38)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gke-5.3 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-1020.22~18.04.1)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-53.47~18.04.1)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Released
(4.15.0-101.102~16.04.1)
|
|
|
linux-hwe-5.4 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4.0-37.41~18.04.1)
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| 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
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Ignored
(end of life, was needs-triage)
|
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Released
(4.4.0-179.209~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1081.91)
|
| eoan |
Ignored
(end of life)
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| 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 |
Released
(5.6.0-1008.8)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-oem-osp1 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1052.57)
|
| eoan |
Ignored
(end of life)
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-oracle-5.0 Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-oracle-5.3 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-1018.20~18.04.1)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| 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
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| 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
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-raspi2-5.3 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-1026.28~18.04.1)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1079.86)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.7~rc1)
|
|
| xenial |
Released
(4.4.0-1137.145)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.0 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | High |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11565
- https://git.kernel.org/linus/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd
- https://github.com/torvalds/linux/commit/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd
- https://ubuntu.com/security/notices/USN-4363-1
- https://ubuntu.com/security/notices/USN-4364-1
- https://ubuntu.com/security/notices/USN-4369-1
- https://ubuntu.com/security/notices/USN-4368-1
- https://ubuntu.com/security/notices/USN-4367-1
- NVD
- Launchpad
- Debian