Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!
Bug 572082 (CVE-2016-1922) - <app-emulation/qemu-2.5.0-r2: i386: null pointer dereference in vapic_write (CVE-2016-1922)
Summary: <app-emulation/qemu-2.5.0-r2: i386: null pointer dereference in vapic_write (...
Alias: CVE-2016-1922
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor (vote)
Assignee: Gentoo Security
Whiteboard: B3 [glsa cve]
Depends on: 578044
  Show dependency tree
Reported: 2016-01-16 10:57 UTC by Agostino Sarubbo
Modified: 2016-04-02 18:27 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


Note You need to log in before you can comment on or make changes to this bug.
Description Agostino Sarubbo gentoo-dev 2016-01-16 10:57:39 UTC
From ${URL} :

Qemu emulator built with the TPR optimization for 32-bit Windows guests 
support is vulnerable to a null pointer dereference flaw. It occurs while 
doing I/O port write operations via hmp interface. In that, 'current_cpu' 
remains null, which leads to the null pointer dereference.

A user/process could use this flaw to crash the Qemu instance, resulting in 
DoS issue.

Upstream patch:
- ---------------

- ----------

@maintainer(s): after the bump, in case we need to stabilize the package, please let us know if it is ready for the stabilization or not.
Comment 1 Agostino Sarubbo gentoo-dev 2016-01-26 15:08:07 UTC
This is fixed upstream:;a=commitdiff;h=4c1396cb576c9b14425558b73de1584c7a9735d7
Comment 2 SpanKY gentoo-dev 2016-03-23 05:25:53 UTC
this is in qemu-2.5.0-r2 and is fine for stable
Comment 3 Aaron Bauman (RETIRED) gentoo-dev 2016-03-23 06:13:08 UTC
Added to existing GLSA.
Comment 4 Yury German Gentoo Infrastructure gentoo-dev 2016-04-02 17:15:21 UTC
Clean as part of bug #567420
Comment 5 GLSAMaker/CVETool Bot gentoo-dev 2016-04-02 18:27:38 UTC
This issue was resolved and addressed in
 GLSA 201604-01 at
by GLSA coordinator Yury German (BlueKnight).