CVE-2018-13093

Public on 2018-08-04
Modified on 2018-08-06
Description
An issue was discovered in the XFS filesystem in fs/xfs/xfs_icache.c in the Linux kernel. There is a NULL pointer dereference leading to a system panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image. This occurs because of a lack of proper validation that cached inodes are free during an allocation.
Severity
Low
CVSS v3 Base Score
5.0
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 kernel 2018-08-04 23:49 ALAS2-2018-1051
Amazon Linux 1 kernel 2018-08-04 23:47 ALAS-2018-1048

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 5.0 CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
NVD CVSSv2 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P
NVD CVSSv3 5.5 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H