Bug 1567074 (CVE-2018-8897) - CVE-2018-8897 Kernel: error in exception handling leads to DoS
Summary: CVE-2018-8897 Kernel: error in exception handling leads to DoS
Status: CLOSED ERRATA
Alias: CVE-2018-8897
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
(Show other bugs)
Version: unspecified
Hardware: All Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20180508,repor...
Keywords: Security
Depends On: 1576066 1421008 1567078 1567079 1567080 1567081 1567082 1567083 1567084 1569378 1569379 1569380 1569381 1569382 1569383 1569384 1569385 1569386 1569387 1570954 1570955 1573392 1577042 1577043 1577044 1578642 1578643
Blocks: 1566885
TreeView+ depends on / blocked
 
Reported: 2018-04-13 11:51 UTC by Prasad J Pandit
Modified: 2018-09-28 02:16 UTC (History)
86 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A flaw was found in the way the Linux kernel handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the stack switch is executed. An unprivileged system user could use this flaw to crash the system kernel resulting in the denial of service.
Story Points: ---
Clone Of:
Environment:
Last Closed: 2018-05-28 13:55:24 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:1318 None None None 2018-05-08 18:26 UTC
Red Hat Product Errata RHSA-2018:1319 None None None 2018-05-08 19:00 UTC
Red Hat Product Errata RHSA-2018:1345 None None None 2018-05-08 19:49 UTC
Red Hat Product Errata RHSA-2018:1346 None None None 2018-05-08 20:56 UTC
Red Hat Product Errata RHSA-2018:1347 None None None 2018-05-08 21:38 UTC
Red Hat Product Errata RHSA-2018:1348 None None None 2018-05-08 21:54 UTC
Red Hat Product Errata RHSA-2018:1349 None None None 2018-05-08 21:48 UTC
Red Hat Product Errata RHSA-2018:1350 None None None 2018-05-08 21:51 UTC
Red Hat Product Errata RHSA-2018:1351 None None None 2018-05-08 21:51 UTC
Red Hat Product Errata RHSA-2018:1352 None None None 2018-05-08 22:48 UTC
Red Hat Product Errata RHSA-2018:1353 None None None 2018-05-08 22:48 UTC
Red Hat Product Errata RHSA-2018:1354 None None None 2018-05-08 22:26 UTC
Red Hat Product Errata RHSA-2018:1355 None None None 2018-05-08 22:25 UTC
Red Hat Product Errata RHSA-2018:1524 None None None 2018-05-15 17:40 UTC

Description Prasad J Pandit 2018-04-13 11:51:44 UTC
A flaw was found in the way the Linux kernel handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, processor does not deliver interrupts and exceptions, they are delivered once the first instruction after the stack switch is executed.

An unprivileged system user could use this flaw to crash the system kernel resulting in DoS.

Upstream patch:
---------------
  -> https://git.kernel.org/linus/d8ba61ba58c88d5207c1ba2f7d9a2280e7d03be9

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2018/05/08/4

Comment 8 Prasad J Pandit 2018-05-02 12:42:34 UTC
Acknowledgments:

Name: Nick Peterson (Everdox Tech LLC), Andy Lutomirski

Comment 13 Justin M. Forbes 2018-05-08 17:19:16 UTC
This issue was fixed for Fedora with the 4.16 rebases

Comment 14 Eric Christensen 2018-05-08 17:40:41 UTC
Statement:

This issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, 7, and Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise Linux 5, 6, 7, and Red Hat Enterprise MRG 2 may address this issue.

Comment 15 errata-xmlrpc 2018-05-08 18:25:49 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:1318 https://access.redhat.com/errata/RHSA-2018:1318

Comment 16 errata-xmlrpc 2018-05-08 19:00:00 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:1319 https://access.redhat.com/errata/RHSA-2018:1319

Comment 17 Fabio Olive Leite 2018-05-08 19:27:28 UTC
External References:

https://access.redhat.com/security/vulnerabilities/pop_ss

Comment 18 errata-xmlrpc 2018-05-08 19:49:02 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.4 Extended Update Support

Via RHSA-2018:1345 https://access.redhat.com/errata/RHSA-2018:1345

Comment 19 errata-xmlrpc 2018-05-08 20:55:36 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.7 Extended Update Support

Via RHSA-2018:1346 https://access.redhat.com/errata/RHSA-2018:1346

Comment 20 errata-xmlrpc 2018-05-08 21:37:59 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.2 Advanced Update Support
  Red Hat Enterprise Linux 7.2 Update Services for SAP Solutions
  Red Hat Enterprise Linux 7.2 Telco Extended Update Support

Via RHSA-2018:1347 https://access.redhat.com/errata/RHSA-2018:1347

Comment 21 errata-xmlrpc 2018-05-08 21:48:18 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.4 Advanced Update Support

Via RHSA-2018:1349 https://access.redhat.com/errata/RHSA-2018:1349

Comment 22 errata-xmlrpc 2018-05-08 21:50:46 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.6 Advanced Update Support
  Red Hat Enterprise Linux 6.6 Telco Extended Update Support

Via RHSA-2018:1351 https://access.redhat.com/errata/RHSA-2018:1351

Comment 23 errata-xmlrpc 2018-05-08 21:51:26 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.5 Advanced Update Support

Via RHSA-2018:1350 https://access.redhat.com/errata/RHSA-2018:1350

Comment 24 errata-xmlrpc 2018-05-08 21:53:52 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.3 Extended Update Support

Via RHSA-2018:1348 https://access.redhat.com/errata/RHSA-2018:1348

Comment 25 errata-xmlrpc 2018-05-08 22:24:56 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:1355 https://access.redhat.com/errata/RHSA-2018:1355

Comment 26 errata-xmlrpc 2018-05-08 22:26:03 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise MRG 2

Via RHSA-2018:1354 https://access.redhat.com/errata/RHSA-2018:1354

Comment 27 errata-xmlrpc 2018-05-08 22:48:04 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5.9 Long Life

Via RHSA-2018:1352 https://access.redhat.com/errata/RHSA-2018:1352

Comment 28 errata-xmlrpc 2018-05-08 22:48:17 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5 Extended Lifecycle Support

Via RHSA-2018:1353 https://access.redhat.com/errata/RHSA-2018:1353

Comment 30 errata-xmlrpc 2018-05-15 17:40:06 UTC
This issue has been addressed in the following products:

  Red Hat Virtualization 4 for RHEL-7

Via RHSA-2018:1524 https://access.redhat.com/errata/RHSA-2018:1524


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