CVE-2018-1093
Published: 1 April 2018
The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.
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
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
upstream |
Released
(4.17~rc1)
|
| bionic |
Released
(4.15.0-33.36)
|
|
| artful |
Ignored
(end of life)
|
|
| cosmic |
Not vulnerable
(4.17.0-6.7)
|
|
| trusty |
Released
(3.13.0-157.207)
|
|
| xenial |
Released
(4.4.0-128.154)
|
|
|
Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||
|
linux-goldfish Launchpad, Ubuntu, Debian |
upstream |
Released
(4.17~rc1)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| xenial |
Ignored
(end of life, was needed)
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
upstream |
Released
(4.17~rc1)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| xenial |
Does not exist
|
|
|
linux-flo Launchpad, Ubuntu, Debian |
upstream |
Released
(4.17~rc1)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| xenial |
Ignored
(abandoned)
|
|
|
linux-aws Launchpad, Ubuntu, Debian |
upstream |
Released
(4.17~rc1)
|
| bionic |
Released
(4.15.0-1020.20)
|
|
| artful |
Does not exist
|
|
| cosmic |
Not vulnerable
(4.15.0-1020.20)
|
|
| trusty |
Released
(4.4.0-1023.23)
|
|
| xenial |
Released
(4.4.0-1061.70)
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
upstream |
Released
(4.17~rc1)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Ignored
(end of standard support, was needed)
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
upstream |
Released
(4.17~rc1)
|
| bionic |
Released
(4.15.0-1022.23)
|
|
| artful |
Does not exist
|
|
| cosmic |
Not vulnerable
(4.18.0-1003.3)
|
|
| trusty |
Not vulnerable
(4.15.0-1023.24~14.04.1)
|
|
| xenial |
Released
(4.15.0-1022.22~16.04.1)
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
upstream |
Released
(4.17~rc1)
|
| bionic |
Released
(4.15.0-1018.19)
|
|
| artful |
Does not exist
|
|
| cosmic |
Not vulnerable
(4.15.0-1018.19)
|
|
| trusty |
Does not exist
|
|
| xenial |
Released
(4.15.0-1018.19~16.04.2)
|
|
|
linux-euclid Launchpad, Ubuntu, Debian |
upstream |
Released
(4.17~rc1)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Ignored
(was needs-triage ESM criteria)
|
|
|
linux-azure-edge Launchpad, Ubuntu, Debian |
upstream |
Released
(4.17~rc1)
|
| bionic |
Not vulnerable
(4.18.0-1003.3~18.04.1)
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Released
(4.15.0-1022.23)
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Not vulnerable
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc1)
|
|
| xenial |
Released
(4.15.0-33.36~16.04.1)
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Not vulnerable
(4.18.0-11.12~18.04.1)
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc1)
|
|
| xenial |
Released
(4.15.0-33.36~16.04.1)
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Released
(4.15.0-1020.20)
|
|
| cosmic |
Not vulnerable
(4.15.0-1020.20)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc1)
|
|
| xenial |
Released
(4.4.0-1027.32)
|
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| upstream |
Released
(4.17~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| upstream |
Released
(4.17~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| upstream |
Released
(4.17~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Released
(4.4.0-128.154~14.04.1)
|
|
| upstream |
Released
(4.17~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-maguro Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.17~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-mako Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.17~rc1)
|
|
| xenial |
Ignored
(abandoned)
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.17~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Released
(4.15.0-1017.20)
|
|
| cosmic |
Not vulnerable
(4.15.0-1017.20)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc1)
|
|
| xenial |
Ignored
(end of standard support, was needed)
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
artful |
Ignored
(end of life)
|
| bionic |
Released
(4.15.0-1021.23)
|
|
| cosmic |
Not vulnerable
(4.15.0-1021.23)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc1)
|
|
| xenial |
Released
(4.4.0-1091.99)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
artful |
Released
(4.4.0-1094.99)
|
| bionic |
Not vulnerable
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc1)
|
|
| xenial |
Released
(4.4.0-1094.99)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1093
- https://bugzilla.kernel.org/show_bug.cgi?id=199181
- https://ubuntu.com/security/notices/USN-3676-1
- https://ubuntu.com/security/notices/USN-3676-2
- https://ubuntu.com/security/notices/USN-3752-1
- https://ubuntu.com/security/notices/USN-3752-2
- https://ubuntu.com/security/notices/USN-3754-1
- https://ubuntu.com/security/notices/USN-3752-3
- NVD
- Launchpad
- Debian