CVE-2018-1094
Linux ext4 Null Pointer Dereference Vulnerability
Description
The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image.
INFO
Published Date :
April 2, 2018, 3:29 a.m.
Last Modified :
Feb. 13, 2023, 4:53 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Affected Products
The following products are affected by CVE-2018-1094
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.
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-2018-1094.
| 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 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2018:3083 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2018:3096 | Third Party Advisory |
| https://bugzilla.kernel.org/show_bug.cgi?id=199183 | Exploit Issue Tracking |
| https://bugzilla.redhat.com/show_bug.cgi?id=1560788 | Issue Tracking Third Party Advisory |
| https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=18db4b4e6fc31eda838dd1c1296d67dbcb3dc957 | Third Party Advisory |
| https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=a45403b51582a87872927a3e0fc0a389c26867f1 | Patch |
| https://usn.ubuntu.com/3695-1/ | Third Party Advisory |
| https://usn.ubuntu.com/3695-2/ | Third Party Advisory |
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-2018-1094 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-1094 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 13, 2023
Action Type Old Value New Value Changed Description The Linux kernel is vulnerable to a NULL pointer dereference in the ext4/xattr.c:ext4_xattr_inode_hash() function. An attacker could trick a legitimate user or a privileged attacker could exploit this to cause a NULL pointer dereference with a crafted ext4 image. The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4_xattr_inode_hash NULL pointer dereference and system crash) 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-2018-1094 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed Description The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image. The Linux kernel is vulnerable to a NULL pointer dereference in the ext4/xattr.c:ext4_xattr_inode_hash() function. An attacker could trick a legitimate user or a privileged attacker could exploit this to cause a NULL pointer dereference with a crafted ext4 image. 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-2018-1094 [No Types Assigned] -
Modified Analysis by [email protected]
Nov. 09, 2020
Action Type Old Value New Value Removed CVSS V3 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Changed Reference Type https://access.redhat.com/errata/RHSA-2018:2948 No Types Assigned https://access.redhat.com/errata/RHSA-2018:2948 Third Party Advisory Changed Reference Type https://access.redhat.com/errata/RHSA-2018:3083 No Types Assigned https://access.redhat.com/errata/RHSA-2018:3083 Third Party Advisory Changed Reference Type https://access.redhat.com/errata/RHSA-2018:3096 No Types Assigned https://access.redhat.com/errata/RHSA-2018:3096 Third Party Advisory Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=18db4b4e6fc31eda838dd1c1296d67dbcb3dc957 Patch https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=18db4b4e6fc31eda838dd1c1296d67dbcb3dc957 Third Party Advisory Changed Reference Type https://usn.ubuntu.com/3695-1/ No Types Assigned https://usn.ubuntu.com/3695-1/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/3695-2/ No Types Assigned https://usn.ubuntu.com/3695-2/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* -
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]
Jul. 04, 2018
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3695-2/ [No Types Assigned] Added Reference https://usn.ubuntu.com/3695-1/ [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 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://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=18db4b4e6fc31eda838dd1c1296d67dbcb3dc957 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=18db4b4e6fc31eda838dd1c1296d67dbcb3dc957 Patch Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=a45403b51582a87872927a3e0fc0a389c26867f1 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=a45403b51582a87872927a3e0fc0a389c26867f1 Patch Changed Reference Type https://bugzilla.kernel.org/show_bug.cgi?id=199183 No Types Assigned https://bugzilla.kernel.org/show_bug.cgi?id=199183 Exploit, Issue Tracking Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1560788 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1560788 Issue Tracking, Third Party Advisory Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (including) 4.15.15
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-1094 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-2018-1094
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.20 }} 0.03%
score
0.56486
percentile