Upstream information

CVE-2017-1000371 at MITRE

Description

The offset2lib patch as used by the Linux Kernel contains a vulnerability, if RLIMIT_STACK is set to RLIM_INFINITY and 1 Gigabyte of memory is allocated (the maximum under the 1/4 restriction) then the stack will be grown down to 0x80000000, and as the PIE binary is mapped above 0x80000000 the minimum distance between the end of the PIE binary's read-write segment and the start of the stack becomes small enough that the stack guard page can be jumped over by an attacker. This affects Linux Kernel version 4.11.5. This is a different issue than CVE-2017-1000370 and CVE-2017-1000365. This issue appears to be limited to i386 based systems.

SUSE information

Overall state of this security issue: Running

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database SUSE
Base Score 7.2 1.2
Vector AV:L/AC:L/Au:N/C:C/I:C/A:C AV:L/AC:H/Au:N/C:N/I:P/A:N
Access Vector Local Local
Access Complexity Low High
Authentication None None
Confidentiality Impact Complete None
Integrity Impact Complete Partial
Availability Impact Complete None
CVSS v3 Scores
  SUSE
Base Score 2.9
Vector AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Access Vector Local
Access Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact Low
Availability Impact None
SUSE Bugzilla entries: 1037551 [NEW], 1039346 [RESOLVED / FIXED], 1039349 [RESOLVED / WONTFIX], 1039354 [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Please note that this evaluation state might be work in progress, incomplete or outdated.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 SP1 kernel-source Analysis
SUSE Linux Enterprise Desktop 12 SP2 kernel-source Analysis
SUSE Linux Enterprise Server 11 SP3 LTSS kernel-source Released
SUSE Linux Enterprise Server 11 SP4 kernel-source In progress
SUSE Linux Enterprise Server 12 GA LTSS kernel-source Released
SUSE Linux Enterprise Server 12 SP1 kernel-source Analysis
SUSE Linux Enterprise Server 12 SP2 kernel-source Analysis