CVE-2018-1093

 

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

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

Total changes: - 3

Description

The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.

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=7dac4a1726a9c64a517d595c40e95e2d0d135f6f
• https://bugzilla.redhat.com/show_bug.cgi?id=1560782
• https://bugzilla.kernel.org/show_bug.cgi?id=199181
• http://openwall.com/lists/oss-security/2018/03/29/1
• DSA-4188-
• [debian-lts-announce] 20180601 [SECURITY] [DLA 1392-1] linux security update-
• USN-3676-2-
• USN-3676-1-
• [debian-lts-announce] 20180715 [SECURITY] [DLA 1422-2] linux security update-
• [debian-lts-announce] 20180714 [SECURITY] [DLA 1422-1] linux security update-
• USN-3754-1-
• USN-3752-2-
• USN-3752-1-
• USN-3752-3-

 

Keywords

NVD

 

CVE-2018-1093

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures