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Status published
Medium
CVE-2018-1092
The ext4_iget function in fs/ext4/inode.c in the Linux kernel through...
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://usn.ubuntu.com/3676-1/
- https://usn.ubuntu.com/3678-2/
- https://access.redhat.com/errata/RHSA-2018:3083
- http://openwall.com/lists/oss-security/2018/03/29/1
- https://www.debian.org/security/2018/dsa-4187
- https://usn.ubuntu.com/3678-1/
- https://usn.ubuntu.com/3677-1/
- https://www.debian.org/security/2018/dsa-4188
- https://usn.ubuntu.com/3754-1/
- https://bugzilla.kernel.org/show_bug.cgi?id=199179
- https://access.redhat.com/errata/RHSA-2018:2948
- https://usn.ubuntu.com/3678-3/
- https://usn.ubuntu.com/3677-2/
- https://bugzilla.redhat.com/show_bug.cgi?id=1560777
- https://usn.ubuntu.com/3676-2/
- 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://access.redhat.com/errata/RHSA-2018:3096
- https://usn.ubuntu.com/3678-4/
- https://bugzilla.kernel.org/show_bug.cgi?id=199275
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Affected Vendor
Affected Software
Linux kernel through version 4.15
Vulnerable Versions:
Linux kernel through version 4.15
Timeline
Official Publish:
April 2nd, 2018
Last Modified:
August 5th, 2024
Added to House:
July 20th, 2026
CVSS Vectors
V3:
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.