CVE-2018-1092
Published: 01 April 2018
The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a root directory with a zero i_links_count, which allows attackers to cause a denial of service (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image.
From the Ubuntu security team
Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations. An attacker could use this to specially craft an ext4 filesystem that caused a denial of service (system crash) when mounted.
Priority
Medium
CVSS 3 base score: 5.5
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(4.15.0-23.25)
|
|
|
Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by 8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44 |
||
|
linux-aws Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(4.15.0-1010.10)
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(4.15.0-1013.13)
|
|
|
linux-azure-edge Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(4.18.0-1003.3~18.04.1)
|
|
|
linux-euclid Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
|
linux-flo Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(4.15.0-1009.9)
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(4.18.0-8.9~18.04.1)
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(4.15.0-1011.11)
|
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
|
linux-maguro Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
|
linux-mako Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(4.15.0-1008.11)
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(4.15.0-1012.13)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.17~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
|
|
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1092
- https://bugzilla.kernel.org/show_bug.cgi?id=199179
- https://ubuntu.com/security/notices/USN-3676-1
- https://ubuntu.com/security/notices/USN-3676-2
- https://ubuntu.com/security/notices/USN-3677-1
- https://ubuntu.com/security/notices/USN-3677-2
- https://ubuntu.com/security/notices/USN-3678-1
- https://ubuntu.com/security/notices/USN-3678-2
- https://ubuntu.com/security/notices/USN-3678-3
- https://ubuntu.com/security/notices/USN-3678-4
- https://ubuntu.com/security/notices/USN-3754-1
- NVD
- Launchpad
- Debian