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7.1
HIGH CVSS 2.0
CVE-2018-1092
Linux kernel ext4 Denial of Service Vulnerability
Description

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.

INFO

Published Date :

April 2, 2018, 3:29 a.m.

Last Modified :

Nov. 21, 2024, 3:59 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2018-1092 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 HIGH [email protected]
CVSS 3.0 MEDIUM [email protected]
Solution
This vulnerability can be remediated by updating the Linux kernel packages.
  • Update the affected kernel packages.
  • Reboot the system for changes to take effect.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-1092.

URL Resource
http://openwall.com/lists/oss-security/2018/03/29/1 Mailing List Third Party Advisory
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 Issue Tracking
https://bugzilla.kernel.org/show_bug.cgi?id=199275 Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1560777 Issue Tracking Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44 Patch
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 Mailing List Third Party Advisory
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 Issue Tracking
https://bugzilla.kernel.org/show_bug.cgi?id=199275 Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1560777 Issue Tracking Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44 Patch
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
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-1092 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2018-1092 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-1092 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2018-1092 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://openwall.com/lists/oss-security/2018/03/29/1
    Added Reference https://access.redhat.com/errata/RHSA-2018:2948
    Added Reference https://access.redhat.com/errata/RHSA-2018:3083
    Added Reference https://access.redhat.com/errata/RHSA-2018:3096
    Added Reference https://bugzilla.kernel.org/show_bug.cgi?id=199179
    Added Reference https://bugzilla.kernel.org/show_bug.cgi?id=199275
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1560777
    Added Reference https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44
    Added Reference https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
    Added Reference https://usn.ubuntu.com/3676-1/
    Added Reference https://usn.ubuntu.com/3676-2/
    Added Reference https://usn.ubuntu.com/3677-1/
    Added Reference https://usn.ubuntu.com/3677-2/
    Added Reference https://usn.ubuntu.com/3678-1/
    Added Reference https://usn.ubuntu.com/3678-2/
    Added Reference https://usn.ubuntu.com/3678-3/
    Added Reference https://usn.ubuntu.com/3678-4/
    Added Reference https://usn.ubuntu.com/3754-1/
    Added Reference https://www.debian.org/security/2018/dsa-4187
    Added Reference https://www.debian.org/security/2018/dsa-4188
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Feb. 12, 2023

    Action Type Old Value New Value
    Changed Description The Linux kernel is vulnerable to a NULL pointer dereference in the ext4/mballoc.c:ext4_process_freed_data() function. An attacker could trick a legitimate user or a privileged attacker could exploit this by mounting a crafted ext4 image to cause a kernel panic. 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.
    Removed CVSS V3 Red Hat, Inc. AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Removed Reference https://access.redhat.com/security/cve/CVE-2018-1092 [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 02, 2023

    Action Type Old Value New Value
    Changed Description 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. The Linux kernel is vulnerable to a NULL pointer dereference in the ext4/mballoc.c:ext4_process_freed_data() function. An attacker could trick a legitimate user or a privileged attacker could exploit this by mounting a crafted ext4 image to cause a kernel panic.
    Added CVSS V3 Red Hat, Inc. AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added Reference https://access.redhat.com/security/cve/CVE-2018-1092 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 31, 2018

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2018:3096 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:3083 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:2948 [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 24, 2018

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/3754-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 16, 2018

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/3678-4/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 14, 2018

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/3678-3/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 13, 2018

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/3678-2/ [No Types Assigned]
    Added Reference https://usn.ubuntu.com/3678-1/ [No Types Assigned]
    Added Reference https://usn.ubuntu.com/3677-2/ [No Types Assigned]
    Added Reference https://usn.ubuntu.com/3677-1/ [No Types Assigned]
    Added Reference https://usn.ubuntu.com/3676-2/ [No Types Assigned]
    Added Reference https://usn.ubuntu.com/3676-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    May. 04, 2018

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html [No Types Assigned]
  • CVE Modified by [email protected]

    May. 03, 2018

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2018/dsa-4188 [No Types Assigned]
    Added Reference https://www.debian.org/security/2018/dsa-4187 [No Types Assigned]
  • Initial Analysis by [email protected]

    May. 02, 2018

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 (AV:N/AC:M/Au:N/C:N/I:N/A:C)
    Added CVSS V3 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44 Patch
    Changed Reference Type http://openwall.com/lists/oss-security/2018/03/29/1 No Types Assigned http://openwall.com/lists/oss-security/2018/03/29/1 Mailing List, Third Party Advisory
    Changed Reference Type https://bugzilla.kernel.org/show_bug.cgi?id=199275 No Types Assigned https://bugzilla.kernel.org/show_bug.cgi?id=199275 Issue Tracking
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1560777 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1560777 Issue Tracking, Third Party Advisory
    Changed Reference Type https://bugzilla.kernel.org/show_bug.cgi?id=199179 No Types Assigned https://bugzilla.kernel.org/show_bug.cgi?id=199179 Issue Tracking
    Added CWE CWE-476
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (including) 4.15.15
  • CVE Modified by [email protected]

    Apr. 21, 2018

    Action Type Old Value New Value
    Added Reference https://bugzilla.kernel.org/show_bug.cgi?id=199275 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 7.1
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.24 }} 0.08%

score

0.46772

percentile