CVE-2018-12233

 

Published at: - 12-06-2018 02:29

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

Total changes: - 3

Description

In the ea_get function in fs/jfs/xattr.c in the Linux kernel through 4.17.1, a memory corruption bug in JFS can be triggered by calling setxattr twice with two different extended attribute names on the same file. This vulnerability can be triggered by an unprivileged user with the ability to create files and execute programs. A kmalloc call is incorrect, leading to slab-out-of-bounds in jfs_xattr.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://lkml.org/lkml/2018/6/2/2
• https://marc.info/?l=linux-kernel&m=152814391530549&w=2
• 104452-Third Party Advisory, VDB Entry
• [debian-lts-announce] 20180715 [SECURITY] [DLA 1422-2] linux security update-Third Party Advisory
• [debian-lts-announce] 20180714 [SECURITY] [DLA 1422-1] linux security update-Third Party Advisory
• [debian-lts-announce] 20180718 [SECURITY] [DLA 1423-1] linux-4.9 new package-Third Party Advisory
• USN-3754-1-Third Party Advisory
• USN-3753-2-Third Party Advisory
• USN-3753-1-Third Party Advisory
• USN-3752-2-Third Party Advisory
• USN-3752-1-Third Party Advisory
• USN-3752-3-Third Party Advisory

 

Keywords

NVD

 

CVE-2018-12233

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures