CVE-2018-1092

 

Published at: - 02-04-2018 05:29

Last modified: - 26-10-2022 01:44

Total changes: - 3

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

 

Verification logic

 

Reference

• https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44
• https://bugzilla.redhat.com/show_bug.cgi?id=1560777
• https://bugzilla.kernel.org/show_bug.cgi?id=199179
• http://openwall.com/lists/oss-security/2018/03/29/1
• https://bugzilla.kernel.org/show_bug.cgi?id=199275
• DSA-4188-
• DSA-4187-
• [debian-lts-announce] 20180502 [SECURITY] [DLA 1369-1] linux security update-
• USN-3678-2-
• USN-3678-1-
• USN-3677-2-
• USN-3677-1-
• USN-3676-2-
• USN-3676-1-
• USN-3678-3-
• USN-3678-4-
• USN-3754-1-
• RHSA-2018:3096-
• RHSA-2018:3083-
• RHSA-2018:2948-

 

Keywords

NVD

 

CVE-2018-1092

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures