CVE-2019-11833
Published: 15 May 2019
fs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the extent tree block, which might allow local users to obtain sensitive information by reading uninitialized data in the filesystem.
From the Ubuntu Security Team
It was discovered that the ext4 file system implementation in the Linux kernel did not properly zero out memory in some situations. A local attacker could use this to expose sensitive information (kernel memory).
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux-flo Launchpad, Ubuntu, Debian |
eoan |
Does not exist
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Ignored
(abandoned)
|
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
|
linux-aws Launchpad, Ubuntu, Debian |
upstream |
Released
(5.2~rc1)
|
| xenial |
Released
(4.4.0-1090.101)
|
|
| bionic |
Released
(4.15.0-1047.49)
|
|
| cosmic |
Ignored
(end of life, was pending)
|
|
| disco |
Released
(5.0.0-1011.12)
|
|
| eoan |
Not vulnerable
(5.0.0-1011.12)
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
bionic |
Released
(4.18.0-1025.27~18.04.1)
|
| cosmic |
Ignored
(end of life, was pending)
|
|
| disco |
Released
(5.0.0-1012.12)
|
|
| eoan |
Not vulnerable
(5.0.0-1012.12)
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Released
(4.15.0-1051.56)
|
|
|
linux-aws-hwe Launchpad, Ubuntu, Debian |
upstream |
Released
(5.2~rc1)
|
| xenial |
Released
(4.15.0-1047.49~16.04.1)
|
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
|
linux-aws-5.0 Launchpad, Ubuntu, Debian |
upstream |
Released
(5.2~rc1)
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| bionic |
Not vulnerable
(5.0.0-1021.24~18.04.1)
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
|
linux-azure-5.3 Launchpad, Ubuntu, Debian |
trusty |
Does not exist
|
| bionic |
Not vulnerable
(5.3.0-1007.8~18.04.1)
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gcp-5.3 Launchpad, Ubuntu, Debian |
disco |
Does not exist
|
| bionic |
Not vulnerable
(5.3.0-1008.9~18.04.1)
|
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-55.60)
|
| cosmic |
Ignored
(end of life, was pending)
|
|
| disco |
Released
(5.0.0-21.22)
|
|
| eoan |
Not vulnerable
(5.2.0-8.9)
|
|
| trusty |
Ignored
(was needs-triage ESM criteria)
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Released
(4.4.0-157.185)
|
|
|
Patches: Introduced by a86c61812637c7dd0c57e29880cffd477b62f2e7 |
||
|
linux-azure-edge Launchpad, Ubuntu, Debian |
bionic |
Released
(4.18.0-1025.27~18.04.1)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Released
(4.15.0-1051.56)
|
|
|
linux-euclid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Ignored
(end of life, was needs-triage)
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1037.39)
|
| cosmic |
Ignored
(end of life, was pending)
|
|
| disco |
Released
(5.0.0-1011.11)
|
|
| eoan |
Not vulnerable
(5.0.0-1011.11)
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Released
(4.15.0-1037.39~16.04.1)
|
|
|
linux-gcp-edge Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1037.39)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Ignored
(end of standard support)
|
|
|
linux-gke-4.15 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1037.39)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gke-5.0 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.0.0-1011.11~18.04.1)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Ignored
(end of life)
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-23.24~18.04.1)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Released
(4.15.0-55.60~16.04.2)
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was pending)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Released
(4.15.0-55.60~16.04.2)
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1039.39)
|
| cosmic |
Ignored
(end of life, was pending)
|
|
| disco |
Released
(5.0.0-1011.12)
|
|
| eoan |
Not vulnerable
(5.0.0-1011.12)
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Released
(4.4.0-1052.59)
|
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-maguro Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-mako Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Ignored
(abandoned)
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1050.57)
|
| cosmic |
Ignored
(end of life)
|
|
| disco |
Released
(4.15.0-1050.57)
|
|
| eoan |
Released
(4.15.0-1050.57)
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Ignored
(end of standard support, was needs-triage)
|
|
|
linux-oem-5.4 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-oem-osp1 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1015.16)
|
| disco |
Ignored
(end of life, was pending)
|
|
| eoan |
Released
(5.0.0-1018.20)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-oracle Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1018.20)
|
| cosmic |
Ignored
(end of life, was pending)
|
|
| disco |
Released
(4.15.0-1018.20)
|
|
| eoan |
Not vulnerable
(4.15.0-1018.20)
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Released
(4.15.0-1018.20~16.04.1)
|
|
|
linux-oracle-5.0 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.0.0-1007.12~18.04.1)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1041.44)
|
| cosmic |
Ignored
(end of life, was pending)
|
|
| disco |
Released
(5.0.0-1013.13)
|
|
| eoan |
Not vulnerable
(5.0.0-1013.13)
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Released
(4.4.0-1117.126)
|
|
|
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
(5.2~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1058.64)
|
| cosmic |
Does not exist
|
|
| disco |
Released
(5.0.0-1017.18)
|
|
| eoan |
Does not exist
|
|
| upstream |
Released
(5.2~rc1)
|
|
| xenial |
Released
(4.4.0-1121.127)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11833
- https://github.com/torvalds/linux/commit/592acbf16821288ecdc4192c47e3774a4c48bb64
- https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=592acbf16821288ecdc4192c47e3774a4c48bb64
- https://ubuntu.com/security/notices/USN-4068-1
- https://ubuntu.com/security/notices/USN-4068-2
- https://ubuntu.com/security/notices/USN-4069-1
- https://ubuntu.com/security/notices/USN-4076-1
- https://ubuntu.com/security/notices/USN-4069-2
- https://ubuntu.com/security/notices/USN-4095-2
- https://ubuntu.com/security/notices/USN-4118-1
- NVD
- Launchpad
- Debian