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
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-8897
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1421008 1567078 1567079 1567080 1567081 1567082 1567083 1567084 1569378 1569379 1569380 1569381 1569382 1569383 1569384 1569385 1569386 1569387 1570954 1570955 1573392 1576066 1577042 1577043 1577044 1578642 1578643
Blocks: 1566885
TreeView+ depends on / blocked
 
Reported: 2018-04-13 11:51 UTC by Prasad Pandit
Modified: 2021-12-10 15:57 UTC (History)
85 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.
Clone Of:
Environment:
Last Closed: 2018-05-28 13:55:24 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:1318 0 None None None 2018-05-08 18:26:13 UTC
Red Hat Product Errata RHSA-2018:1319 0 None None None 2018-05-08 19:00:21 UTC
Red Hat Product Errata RHSA-2018:1345 0 None None None 2018-05-08 19:49:23 UTC
Red Hat Product Errata RHSA-2018:1346 0 None None None 2018-05-08 20:56:02 UTC
Red Hat Product Errata RHSA-2018:1347 0 None None None 2018-05-08 21:38:21 UTC
Red Hat Product Errata RHSA-2018:1348 0 None None None 2018-05-08 21:54:24 UTC
Red Hat Product Errata RHSA-2018:1349 0 None None None 2018-05-08 21:48:41 UTC
Red Hat Product Errata RHSA-2018:1350 0 None None None 2018-05-08 21:51:46 UTC
Red Hat Product Errata RHSA-2018:1351 0 None None None 2018-05-08 21:51:10 UTC
Red Hat Product Errata RHSA-2018:1352 0 None None None 2018-05-08 22:48:24 UTC
Red Hat Product Errata RHSA-2018:1353 0 None None None 2018-05-08 22:48:41 UTC
Red Hat Product Errata RHSA-2018:1354 0 None None None 2018-05-08 22:26:24 UTC
Red Hat Product Errata RHSA-2018:1355 0 None None None 2018-05-08 22:25:17 UTC
Red Hat Product Errata RHSA-2018:1524 0 None None None 2018-05-15 17:40:30 UTC

Description Prasad 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 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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