Bug 1526029 (CVE-2018-18954) - CVE-2018-18954 QEMU: ppc64: Out-of-bounds r/w stack access in pnv_lpc_do_eccb
Summary: CVE-2018-18954 QEMU: ppc64: Out-of-bounds r/w stack access in pnv_lpc_do_eccb
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-18954
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1647164 Engineering1647166
Blocks: Embargoed1526038
TreeView+ depends on / blocked
 
Reported: 2017-12-14 16:23 UTC by Pedro Sampaio
Modified: 2021-02-17 01:05 UTC (History)
43 users (show)

Fixed In Version:
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Last Closed: 2019-06-08 03:34:19 UTC

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Description Pedro Sampaio 2017-12-14 16:23:59 UTC 
An OOB r/w buffer access issue was found in the PowerPC PowerNV LPC controller
in 'pnv_lpc_do_eccb' routine. It could occur while performing a memory write operation. A guest user/process could use this flaw to crash the QEMU process resulting in DoS.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg00446.html

Reference:
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  -> https://www.openwall.com/lists/oss-security/2018/11/06/6
Comment 3 Joshua Padman 2018-07-12 05:22:51 UTC 
PowerNV is not included or supported in the QEMU provided with OpenStack.
Comment 4 Joshua Padman 2018-11-05 09:26:32 UTC 
Acknowledgments:

Name: moguofang
Comment 5 Prasad Pandit 2018-11-06 19:06:00 UTC 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1647164]
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