Bug 1596094 (CVE-2018-10872) - CVE-2018-10872 kernel: error in exception handling leads to DoS (CVE-2018-8897 regression)
Summary: CVE-2018-10872 kernel: error in exception handling leads to DoS (CVE-2018-889...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-10872
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: impact=moderate,public=20180710:1000,...
Depends On: 1596113
Blocks: 1566885
TreeView+ depends on / blocked
 
Reported: 2018-06-28 09:07 UTC by Adam Mariš
Modified: 2019-06-08 22:59 UTC (History)
60 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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, 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. This CVE-2018-10872 was assigned due to regression of CVE-2018-8897 in Red Hat Enterprise Linux 6.10 GA kernel; no other versions are affected by this CVE.
Clone Of:
Environment:
Last Closed: 2018-07-11 11:02:31 UTC


Attachments (Terms of Use)


Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:2164 None None None 2018-07-10 17:54:13 UTC

Description Adam Mariš 2018-06-28 09:07:20 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.

This CVE-2018-10872 was assigned due to regression of CVE-2018-8897 in Red Hat Enterprise Linux 6.10. No other versions are affected by this CVE.

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

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

Comment 2 errata-xmlrpc 2018-07-10 17:53:46 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:2164 https://access.redhat.com/errata/RHSA-2018:2164


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