Upstream information

CVE-2018-1095 at MITRE

Description

The ext4_xattr_check_entries function in fs/ext4/xattr.c in the Linux kernel through 4.15.15 does not properly validate xattr sizes, which causes misinterpretation of a size as an error code, and consequently allows attackers to cause a denial of service (get_acl NULL pointer dereference and system crash) via a crafted ext4 image.

SUSE information

Overall state of this security issue: Running

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 7.1
Vector AV:N/AC:M/Au:N/C:N/I:N/A:C
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 5.5 4.4
Vector AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Access Vector Local Local
Access Complexity Low Low
Privileges Required None High
User Interaction Required None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High High
CVSSv3 Version 3.0 3.0
SUSE Bugzilla entries: 1087004 [RESOLVED / UPSTREAM], 1087082 [RESOLVED / FIXED]

No SUSE Security Announcements cross referenced.


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
SUSE Linux Enterprise Desktop 12 SP2 kernel-source Affected
SUSE Linux Enterprise Desktop 12 SP3 kernel-source Released
SUSE Linux Enterprise Desktop 12 SP4 kernel-source Released
SUSE Linux Enterprise High Performance Computing 12 kernel-source Released
SUSE Linux Enterprise Module for Basesystem 15 GA kernel-source Analysis
SUSE Linux Enterprise Module for Basesystem 15 SP1 kernel-source Analysis
SUSE Linux Enterprise Module for Development Tools 15 GA kernel-source Analysis
SUSE Linux Enterprise Module for Development Tools 15 SP1 kernel-source Analysis
SUSE Linux Enterprise Server 11 SP3 LTSS kernel-source Analysis
SUSE Linux Enterprise Server 11 SP4 kernel-source Analysis
SUSE Linux Enterprise Server 11 SP4 LTSS kernel-source Analysis
SUSE Linux Enterprise Server 12 GA LTSS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP1 LTSS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP2 kernel-source Not affected
SUSE Linux Enterprise Server 12 SP2 LTSS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP3 kernel-source Released
SUSE Linux Enterprise Server 12 SP3 LTSS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP4 kernel-source Released
SUSE Linux Enterprise Server 12 SP5 kernel-source Analysis
SUSE Linux Enterprise Server for SAP Applications 11 SP3 kernel-source Analysis
SUSE Linux Enterprise Server for SAP Applications 12 GA kernel-source Analysis
SUSE Linux Enterprise Server for SAP Applications 12 SP2 kernel-source Analysis
SUSE Linux Enterprise Server for SAP Applications 12 SP3 kernel-source Released
SUSE Linux Enterprise Server for SAP Applications 12 SP4 kernel-source Released