CVE-2018-1093

CVE Details

Release Date:	2018-07-30
Impact:	None	What is this?

Description

The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linuxkernel 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.

See more information about CVE-2018-1093 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v2 metrics

Base Score:	7.1
Vector String:	AV:N/AC:M/Au:N/C:N/I:N/A:C
Version:	2.0
Attack Vector:	Network
Attack Complexity:	Medium
Authentication:	None
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Complete

Errata information

Platform	Errata	Release Date
Oracle Linux version 5 (kernel-uek)	ELSA-2018-4110	2018-05-15
Oracle Linux version 6 (dtrace-modules-3.8.13-118.21.1.el6uek)	ELSA-2018-4109	2018-05-15
Oracle Linux version 6 (kernel-uek)	ELSA-2018-4084	2018-04-26
Oracle Linux version 6 (kernel-uek)	ELSA-2018-4109	2018-05-15
Oracle Linux version 6 (kernel-uek)	ELSA-2018-4110	2018-05-15
Oracle Linux version 7 (dtrace-modules-3.8.13-118.21.1.el7uek)	ELSA-2018-4109	2018-05-15
Oracle Linux version 7 (kernel-uek)	ELSA-2018-4084	2018-04-26
Oracle Linux version 7 (kernel-uek)	ELSA-2018-4109	2018-05-15
Oracle VM version 3.3 (kernel-uek)	OVMSA-2018-0044	2018-05-16
Oracle VM version 3.4 (kernel-uek)	OVMSA-2018-0037	2018-04-27