Upstream information

CVE-2019-15239 at MITRE

Description

In the Linux kernel, a certain net/ipv4/tcp_output.c change, which was properly incorporated into 4.16.12, was incorrectly backported to the earlier longterm kernels, introducing a new vulnerability that was potentially more severe than the issue that was intended to be fixed by backporting. Specifically, by adding to a write queue between disconnection and re-connection, a local attacker can trigger multiple use-after-free conditions. This can result in a kernel crash, or potentially in privilege escalation. NOTE: this affects (for example) Linux distributions that use 4.9.x longterm kernels before 4.9.190 or 4.14.x longterm kernels before 4.14.139.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having important severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 7.2
Vector AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 7.8 7.5
Vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Access Vector Local Network
Access Complexity Low Low
Privileges Required Low None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High None
Integrity Impact High None
Availability Impact High High
SUSE Bugzilla entry: 1146589 [NEW]

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Please note that this evaluation state might be work in progress, incomplete or outdated.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 Business Critical Linux 12 SP3 kernel-source Analysis
SUSE Linux Enterprise Desktop 11 GA kernel-source Analysis
SUSE Linux Enterprise Desktop 11 SP1 kernel-source Analysis
SUSE Linux Enterprise Desktop 11 SP2 kernel-source Analysis
SUSE Linux Enterprise Desktop 11 SP3 kernel-source Analysis
SUSE Linux Enterprise Desktop 11 SP4 kernel-source Analysis
SUSE Linux Enterprise Desktop 12 SP1 kernel-source Analysis
SUSE Linux Enterprise Desktop 12 SP2 kernel-source Analysis
SUSE Linux Enterprise Desktop 12 SP3 kernel-source Analysis
SUSE Linux Enterprise Desktop 12 SP4 kernel-source Already fixed
SUSE Linux Enterprise Desktop 12 SP5 kernel-source Analysis
SUSE Linux Enterprise High Performance Computing 12 kernel-source Already fixed
SUSE Linux Enterprise Module for Basesystem 15 GA kernel-source Already fixed
SUSE Linux Enterprise Module for Basesystem 15 SP1 kernel-source Already fixed
SUSE Linux Enterprise Module for Development Tools 15 GA kernel-source Already fixed
SUSE Linux Enterprise Module for Development Tools 15 SP1 kernel-source Already fixed
SUSE Linux Enterprise Server 11 SP4 LTSS kernel-source Not affected
SUSE Linux Enterprise Server 12 SP1 LTSS kernel-source Affected
SUSE Linux Enterprise Server 12 SP2 LTSS kernel-source Affected
SUSE Linux Enterprise Server 12 SP3 LTSS kernel-source Already fixed
SUSE Linux Enterprise Server 12 SP4 kernel-source Already fixed
SUSE Linux Enterprise Server for SAP Applications 12 SP2 kernel-source Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 kernel-source Already fixed
SUSE Linux Enterprise Server for SAP Applications 12 SP4 kernel-source Already fixed