CVE-2018-1092

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.5 MEDIUM
LOCAL
LOW
NONE
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
redhatCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 49%
VendorProductVersion
linuxlinux_kernel
𝑥
≤ 4.15.15
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bullseye
5.10.223-1
fixed
bullseye (security)
5.10.226-1
fixed
bookworm
6.1.106-3
fixed
bookworm (security)
6.1.112-1
fixed
trixie
6.11.5-1
fixed
sid
6.11.6-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
linux
cosmic
not-affected
bionic
Fixed 4.15.0-23.25
released
artful
Fixed 4.13.0-45.50
released
xenial
Fixed 4.4.0-128.154
released
trusty
Fixed 3.13.0-157.207
released
linux-aws
cosmic
not-affected
bionic
Fixed 4.15.0-1010.10
released
artful
dne
xenial
Fixed 4.4.0-1061.70
released
trusty
Fixed 4.4.0-1023.23
released
linux-azure
cosmic
not-affected
bionic
Fixed 4.15.0-1013.13
released
artful
dne
xenial
Fixed 4.15.0-1013.13~16.04.2
released
trusty
not-affected
linux-azure-edge
cosmic
dne
bionic
not-affected
xenial
Fixed 4.15.0-1013.13
released
trusty
dne
linux-euclid
cosmic
dne
bionic
dne
artful
dne
xenial
ignored
trusty
dne
linux-flo
cosmic
dne
bionic
dne
artful
dne
xenial
ignored
trusty
dne
linux-gcp
cosmic
not-affected
bionic
Fixed 4.15.0-1009.9
released
artful
dne
xenial
Fixed 4.13.0-1019.23
released
trusty
dne
linux-gke
cosmic
dne
bionic
dne
artful
dne
xenial
ignored
trusty
dne
linux-goldfish
cosmic
dne
bionic
dne
artful
dne
xenial
ignored
trusty
dne
linux-grouper
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-hwe
cosmic
dne
bionic
not-affected
artful
dne
xenial
Fixed 4.13.0-45.50~16.04.1
released
trusty
dne
linux-hwe-edge
cosmic
dne
bionic
not-affected
artful
dne
xenial
Fixed 4.13.0-45.50~16.04.1
released
trusty
dne
linux-kvm
cosmic
not-affected
bionic
Fixed 4.15.0-1011.11
released
artful
dne
xenial
Fixed 4.4.0-1027.32
released
trusty
dne
linux-lts-trusty
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-lts-utopic
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-lts-vivid
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-lts-wily
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-lts-xenial
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
Fixed 4.4.0-128.154~14.04.1
released
linux-maguro
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-mako
cosmic
dne
bionic
dne
artful
dne
xenial
ignored
trusty
dne
linux-manta
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-oem
cosmic
not-affected
bionic
Fixed 4.15.0-1008.11
released
artful
dne
xenial
Fixed 4.13.0-1030.33
released
trusty
dne
linux-raspi2
cosmic
not-affected
bionic
Fixed 4.15.0-1012.13
released
artful
Fixed 4.13.0-1022.23
released
xenial
Fixed 4.4.0-1091.99
released
trusty
dne
linux-snapdragon
cosmic
dne
bionic
not-affected
artful
Fixed 4.4.0-1094.99
released
xenial
Fixed 4.4.0-1094.99
released
trusty
dne
Common Weakness Enumeration
References
http://openwall.com/lists/oss-security/2018/03/29/1
https://access.redhat.com/errata/RHSA-2018:2948
https://access.redhat.com/errata/RHSA-2018:3083
https://access.redhat.com/errata/RHSA-2018:3096
https://bugzilla.kernel.org/show_bug.cgi?id=199179
https://bugzilla.kernel.org/show_bug.cgi?id=199275
https://bugzilla.redhat.com/show_bug.cgi?id=1560777
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
https://usn.ubuntu.com/3676-1/
https://usn.ubuntu.com/3676-2/
https://usn.ubuntu.com/3677-1/
https://usn.ubuntu.com/3677-2/
https://usn.ubuntu.com/3678-1/
https://usn.ubuntu.com/3678-2/
https://usn.ubuntu.com/3678-3/
https://usn.ubuntu.com/3678-4/
https://usn.ubuntu.com/3754-1/
https://www.debian.org/security/2018/dsa-4187
https://www.debian.org/security/2018/dsa-4188
http://openwall.com/lists/oss-security/2018/03/29/1
https://access.redhat.com/errata/RHSA-2018:2948
https://access.redhat.com/errata/RHSA-2018:3083
https://access.redhat.com/errata/RHSA-2018:3096
https://bugzilla.kernel.org/show_bug.cgi?id=199179
https://bugzilla.kernel.org/show_bug.cgi?id=199275
https://bugzilla.redhat.com/show_bug.cgi?id=1560777
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
https://usn.ubuntu.com/3676-1/
https://usn.ubuntu.com/3676-2/
https://usn.ubuntu.com/3677-1/
https://usn.ubuntu.com/3677-2/
https://usn.ubuntu.com/3678-1/
https://usn.ubuntu.com/3678-2/
https://usn.ubuntu.com/3678-3/
https://usn.ubuntu.com/3678-4/
https://usn.ubuntu.com/3754-1/
https://www.debian.org/security/2018/dsa-4187
https://www.debian.org/security/2018/dsa-4188