qubes-doc/security-info/security-bulletins.md

---
layout: security
title: Security Bulletins
permalink: /security/bulletins/
redirect_from: 
- /doc/security-bulletins/
- /en/doc/security-bulletins/
- /doc/SecurityBulletins/
- /wiki/SecurityBulletins/
- /trac/wiki/SecurityBulletins/
---

Qubes Security Bulletins
========================

Qubes Security Bulletins are published through the [Qubes Security Pack](/security/pack/).

2010
----

-   None

2011
----

-   [Qubes Security Bulletin \#01](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-001-2011.txt) (Gui daemon bug, Intel VT-d escape on non-IR hardware)

2012
----

-   [Qubes Security Bulletin \#02](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-002-2012.txt) (Intel SYSRET bug)
-   [Qubes Security Bulletin \#03](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-003-2012.txt) (Xen hypervisor bugs: XSA 13, others with DoS potential)
-   [Qubes Security Bulletin \#04](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-004-2012.txt) (Qubes firewall misconfiguration: ipv6 allowed)
-   [Qubes Security Bulletin \#05](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-005-2012.txt) (Xen hypervisor bugs: XSA 29, others with DoS potential)

2013
----

-   [Qubes Security Bulletin \#06](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-006-2013.txt) (Xen hypervisor bugs: XSA 50, others with DoS potential)
-   [Qubes Security Bulletin \#07](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-007-2013.txt) (Xen hypervisor bugs: XSA 57 potential escalation, also XSA 52-54 with potential leaks)
-   [Qubes Security Bulletin \#08](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-008-2013.txt) (Xen hypervisor bugs: XSA 45,58 potential DoS)

2014
----

-   [Qubes Security Bulletin \#09](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-009-2014.txt) (Qubes qvm-open-in-[d]vm environment inter-VM leak)
-   [Qubes Security Bulletin \#10](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-010-2014.txt) (Qubes pulseaudio & vchan bugs, Xen XSA 87)
-   [Qubes Security Bulletin \#11](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-011-2014.txt) (Qubes clipboard inter-VM leak)
-   [Qubes Security Bulletin \#12](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-012-2014.txt) (Memory leak in Xen hypervisor via RDMSR emulation bug (XSA 108))

2015
----

-   [Qubes Security Bulletin \#13](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-013-2015.txt) (Qubes Clipboard Timing Attacks and Qubes Core Python API Inconsistency)
-   [Qubes Security Bulletin \#14](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-014-2015.txt) (Race condition in Qubes Inter-VM File-Copy Mechanism)
-   [Qubes Security Bulletin \#15](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-015-2015.txt) (Critical Xen Hypervisor Vulnerability (XSA 109))
-   [Qubes Security Bulletin \#16](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-016-2015.txt) (Xen Hypervisor Information Leaks Vulnerabilities (XSA 121 & 122))
-   [Qubes Security Bulletin \#17](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-017-2015.txt) (Xen DoS from malicious driver domains or devices (XSA 120 & 124))
-   [Qubes Security Bulletin \#18](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-018-2015.txt) (Xen Hypervisor Instruction Emulation Bug (XSA 123))
-   [Qubes Security Bulletin \#19](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-019-2015.txt) (Anti Evil Maid bypass through unusual LUKS header)
-   [Qubes Security Bulletin \#20](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-020-2015.txt) (Fedora os-prober considered harmful)
-   [Qubes Security Bulletin \#21](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-021-2015.txt) (Anti Evil Maid bypass through filesystem ID collision)
-   [Qubes Security Bulletin \#22](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-022-2015.txt) (Critical Xen bug in PV memory virtualization code (XSA 148))
-   [Qubes Security Bulletin \#23](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-023-2015.txt) (Race condition bugs in Xen code (XSA-155 and XSA-166), other Xen bugs)

2016
----

-   [Qubes Security Bulletin \#24](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-024-2016.txt) (Critical Xen bug in PV memory virtualization code (XSA 182))
-   [Qubes Security Bulletin \#25](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-025-2016.txt) (Xen bug in event channel handling code (XSA 188))
-   [Qubes Security Bulletin \#26](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-026-2016.txt) (Colored window border handling bug in Qubes GUI daemon)
-   [Qubes Security Bulletin \#27](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-027-2016.txt) (Xen 64-bit bit test instruction emulation broken (XSA 195))
-   [Qubes Security Bulletin \#28](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-028-2016.txt) (Debian update mechanism vulnerability)

2017
----

-   [Qubes Security Bulletin \#29](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-029-2017.txt) (Critical Xen bug in PV memory virtualization code (XSA-212))
-   [Qubes Security Bulletin \#30](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-030-2017.txt) (Critical Xen bugs related to PV memory virtualization (XSA-213, XSA-214))
-   [Qubes Security Bulletin \#31](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-031-2017.txt) (Xen hypervisor vulnerabilities with unresearched impact (XSA 216-224))
-   [Qubes Security Bulletin \#32](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-032-2017.txt) (Xen hypervisor and Linux kernel vulnerabilities (XSA-226 through XSA-230))
-   [Qubes Security Bulletin \#33](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-033-2017.txt) (Xen hypervisor (XSA-231 through XSA-234))
-   [Qubes Security Bulletin \#34](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-034-2017.txt) (GUI issue and Xen vulnerabilities (XSA-237 through XSA-244))
-   [Qubes Security Bulletin \#35](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-035-2017.txt) (Xen hypervisor issue related to grant tables (XSA-236))
-   [Qubes Security Bulletin \#36](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-036-2017.txt) (Xen hypervisor issue in populate-on-demand code (XSA-247))

2018
----

-   [Qubes Security Bulletin \#37](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-037-2018.txt) (Information leaks due to processor speculative execution bugs)
-   [Qubes Security Bulletin \#38](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-038-2018.txt) (Qrexec policy bypass and possible information leak)
-   [Qubes Security Bulletin \#39](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-039-2018.txt) (Xen vulnerability (XSA-260) and GUI daemon issue)
-   [Qubes Security Bulletin \#40](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-040-2018.txt) (Information leaks due to processor speculative store bypass (XSA-263))
-   [Qubes Security Bulletin \#41](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-041-2018.txt) (Speculative register leakage from lazy FPU context switching (XSA-267))
-   [Qubes Security Bulletin \#42](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-042-2018.txt) (Linux netback driver OOB access in hash handling (XSA-270))
-   [Qubes Security Bulletin \#43](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-043-2018.txt) (L1 Terminal Fault speculative side channel (XSA-273))
-   [Qubes Security Bulletin \#44](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-044-2018.txt) (Multiple Xen vulnerabilities (XSA-275, XSA-280))
-   [Qubes Security Bulletin \#45](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-045-2018.txt) (Insecure default Salt configuration)
SecurityBulletins changed Initial version 2012-06-12 05:01:41 -04:00			`---`
Reorganize security info pages 2017-03-18 22:31:12 -04:00			`layout: security`
Update page titles from CamelCase to lowercase-hyphen-separated (closes QubesOS/qubes-issues#1205) 2015-10-13 23:31:03 -04:00			`title: Security Bulletins`
Reorganize security info pages 2017-03-18 22:31:12 -04:00			`permalink: /security/bulletins/`
Supporting more old trac links for backward compatibility in QSB. 2015-07-17 18:46:04 -04:00			`redirect_from:`
Reorganize security info pages 2017-03-18 22:31:12 -04:00			`- /doc/security-bulletins/`
Remove en/ from URLs (QubesOS/qubes-issues#1333) 2015-10-28 18:14:40 -04:00			`- /en/doc/security-bulletins/`
Change URIs from CamelCase to lowercase-hyphen-separated 2015-10-11 03:04:59 -04:00			`- /doc/SecurityBulletins/`
Supporting more old trac links for backward compatibility in QSB. 2015-07-17 18:46:04 -04:00			`- /wiki/SecurityBulletins/`
			`- /trac/wiki/SecurityBulletins/`
SecurityBulletins changed Initial version 2012-06-12 05:01:41 -04:00			`---`

			`Qubes Security Bulletins`
			`========================`

Reorganize security info pages 2017-03-18 22:31:12 -04:00			`Qubes Security Bulletins are published through the [Qubes Security Pack](/security/pack/).`
SecurityBulletins changed Added link to SecurityPack 2015-01-14 07:24:23 -05:00
SecurityBulletins changed Initial version 2012-06-12 05:01:41 -04:00			`2010`
			`----`

SecurityBulletins changed Corected link to QSB #2, added "None" to 2010 2012-06-15 06:36:15 -04:00			`- None`

SecurityBulletins changed Initial version 2012-06-12 05:01:41 -04:00			`2011`
			`----`

Remove zero-width spaces (U+200B) left by trac 2015-05-08 09:17:21 -04:00			`- [Qubes Security Bulletin \#01](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-001-2011.txt) (Gui daemon bug, Intel VT-d escape on non-IR hardware)`
SecurityBulletins changed Initial version 2012-06-12 05:01:41 -04:00
			`2012`
			`----`
SecurityBulletins changed Added link to QSB #2 2012-06-12 08:19:24 -04:00
Remove zero-width spaces (U+200B) left by trac 2015-05-08 09:17:21 -04:00			`- [Qubes Security Bulletin \#02](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-002-2012.txt) (Intel SYSRET bug)`
			`- [Qubes Security Bulletin \#03](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-003-2012.txt) (Xen hypervisor bugs: XSA 13, others with DoS potential)`
			`- [Qubes Security Bulletin \#04](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-004-2012.txt) (Qubes firewall misconfiguration: ipv6 allowed)`
			`- [Qubes Security Bulletin \#05](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-005-2012.txt) (Xen hypervisor bugs: XSA 29, others with DoS potential)`
SecurityBulletins changed Added link to QSB #2 2012-06-12 08:19:24 -04:00
SecurityBulletins changed Added link to QBS #6 2013-05-07 04:13:50 -04:00			`2013`
			`----`

Remove zero-width spaces (U+200B) left by trac 2015-05-08 09:17:21 -04:00			`- [Qubes Security Bulletin \#06](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-006-2013.txt) (Xen hypervisor bugs: XSA 50, others with DoS potential)`
			`- [Qubes Security Bulletin \#07](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-007-2013.txt) (Xen hypervisor bugs: XSA 57 potential escalation, also XSA 52-54 with potential leaks)`
			`- [Qubes Security Bulletin \#08](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-008-2013.txt) (Xen hypervisor bugs: XSA 45,58 potential DoS)`
SecurityBulletins changed Added link to QBS #6 2013-05-07 04:13:50 -04:00
SecurityBulletins changed Added QSB #9 2014-01-09 12:19:34 -05:00			`2014`
			`----`

Remove zero-width spaces (U+200B) left by trac 2015-05-08 09:17:21 -04:00			`- [Qubes Security Bulletin \#09](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-009-2014.txt) (Qubes qvm-open-in-[d]vm environment inter-VM leak)`
			`- [Qubes Security Bulletin \#10](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-010-2014.txt) (Qubes pulseaudio & vchan bugs, Xen XSA 87)`
			`- [Qubes Security Bulletin \#11](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-011-2014.txt) (Qubes clipboard inter-VM leak)`
			`- [Qubes Security Bulletin \#12](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-012-2014.txt) (Memory leak in Xen hypervisor via RDMSR emulation bug (XSA 108))`
SecurityBulletins changed Updated old links, made numbering consistent, and added most recent QSB 2015-01-14 07:30:07 -05:00
			`2015`
			`----`

Remove zero-width spaces (U+200B) left by trac 2015-05-08 09:17:21 -04:00			`- [Qubes Security Bulletin \#13](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-013-2015.txt) (Qubes Clipboard Timing Attacks and Qubes Core Python API Inconsistency)`
			`- [Qubes Security Bulletin \#14](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-014-2015.txt) (Race condition in Qubes Inter-VM File-Copy Mechanism)`
			`- [Qubes Security Bulletin \#15](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-015-2015.txt) (Critical Xen Hypervisor Vulnerability (XSA 109))`
Update security bulletins 2015-10-30 01:51:23 -04:00			`- [Qubes Security Bulletin \#16](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-016-2015.txt) (Xen Hypervisor Information Leaks Vulnerabilities (XSA 121 & 122))`
			`- [Qubes Security Bulletin \#17](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-017-2015.txt) (Xen DoS from malicious driver domains or devices (XSA 120 & 124))`
			`- [Qubes Security Bulletin \#18](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-018-2015.txt) (Xen Hypervisor Instruction Emulation Bug (XSA 123))`
			`- [Qubes Security Bulletin \#19](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-019-2015.txt) (Anti Evil Maid bypass through unusual LUKS header)`
			`- [Qubes Security Bulletin \#20](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-020-2015.txt) (Fedora os-prober considered harmful)`
			`- [Qubes Security Bulletin \#21](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-021-2015.txt) (Anti Evil Maid bypass through filesystem ID collision)`
			`- [Qubes Security Bulletin \#22](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-022-2015.txt) (Critical Xen bug in PV memory virtualization code (XSA 148))`
Add QSB #23 (fixes QubesOS/qubes-issues#1583) 2016-01-04 23:18:05 -05:00			`- [Qubes Security Bulletin \#23](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-023-2015.txt) (Race condition bugs in Xen code (XSA-155 and XSA-166), other Xen bugs)`
SecurityBulletins changed Added QSB #9 2014-01-09 12:19:34 -05:00
Add QSB 24 to Security Bulletins page 2016-07-27 16:49:58 -04:00			`2016`
			`----`

			`- [Qubes Security Bulletin \#24](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-024-2016.txt) (Critical Xen bug in PV memory virtualization code (XSA 182))`
Add QSB 25 2016-09-17 17:00:55 -04:00			`- [Qubes Security Bulletin \#25](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-025-2016.txt) (Xen bug in event channel handling code (XSA 188))`
Add QSB 26 2016-09-21 13:56:55 -04:00			`- [Qubes Security Bulletin \#26](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-026-2016.txt) (Colored window border handling bug in Qubes GUI daemon)`
Add QSB 27 2016-11-22 09:00:21 -05:00			`- [Qubes Security Bulletin \#27](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-027-2016.txt) (Xen 64-bit bit test instruction emulation broken (XSA 195))`
Fix typo 2016-12-20 06:04:53 -05:00			`- [Qubes Security Bulletin \#28](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-028-2016.txt) (Debian update mechanism vulnerability)`
Add QSB 24 to Security Bulletins page 2016-07-27 16:49:58 -04:00
Add XSA-212 2017-04-04 09:29:57 -04:00			`2017`
			`----`

			`- [Qubes Security Bulletin \#29](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-029-2017.txt) (Critical Xen bug in PV memory virtualization code (XSA-212))`
Add QSB 30 2017-05-02 08:26:45 -04:00			`- [Qubes Security Bulletin \#30](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-030-2017.txt) (Critical Xen bugs related to PV memory virtualization (XSA-213, XSA-214))`
Add QSB 31 2017-06-20 10:00:57 -04:00			`- [Qubes Security Bulletin \#31](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-031-2017.txt) (Xen hypervisor vulnerabilities with unresearched impact (XSA 216-224))`
Add QSB 32; minor update to QSB template 2017-08-15 09:27:34 -04:00			`- [Qubes Security Bulletin \#32](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-032-2017.txt) (Xen hypervisor and Linux kernel vulnerabilities (XSA-226 through XSA-230))`
Add QSB 33 2017-09-12 10:18:51 -04:00			`- [Qubes Security Bulletin \#33](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-033-2017.txt) (Xen hypervisor (XSA-231 through XSA-234))`
Add QSB 34 2017-10-12 09:57:54 -04:00			`- [Qubes Security Bulletin \#34](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-034-2017.txt) (GUI issue and Xen vulnerabilities (XSA-237 through XSA-244))`
Add QSB 36 2017-11-28 10:24:41 -05:00			`- [Qubes Security Bulletin \#35](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-035-2017.txt) (Xen hypervisor issue related to grant tables (XSA-236))`
			`- [Qubes Security Bulletin \#36](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-036-2017.txt) (Xen hypervisor issue in populate-on-demand code (XSA-247))`
Move QSB 37 to 2018 2018-01-11 09:58:19 -05:00
			`2018`
			`----`

Add QSB 37 2018-01-11 09:41:56 -05:00			`- [Qubes Security Bulletin \#37](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-037-2018.txt) (Information leaks due to processor speculative execution bugs)`
Add QSB 38 2018-02-19 22:35:03 -05:00			`- [Qubes Security Bulletin \#38](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-038-2018.txt) (Qrexec policy bypass and possible information leak)`
Add QSB 39 2018-05-08 21:06:59 -04:00			`- [Qubes Security Bulletin \#39](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-039-2018.txt) (Xen vulnerability (XSA-260) and GUI daemon issue)`
Add XSA number to QSB 40's title 2018-05-23 22:33:57 -04:00			`- [Qubes Security Bulletin \#40](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-040-2018.txt) (Information leaks due to processor speculative store bypass (XSA-263))`
Add QSB 41 2018-06-13 23:37:13 -04:00			`- [Qubes Security Bulletin \#41](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-041-2018.txt) (Speculative register leakage from lazy FPU context switching (XSA-267))`
Add QSB 42 2018-08-12 17:34:53 -04:00			`- [Qubes Security Bulletin \#42](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-042-2018.txt) (Linux netback driver OOB access in hash handling (XSA-270))`
Add QSB 43 2018-09-01 23:06:16 -04:00			`- [Qubes Security Bulletin \#43](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-043-2018.txt) (L1 Terminal Fault speculative side channel (XSA-273))`
Add QSB 44 2018-11-20 21:50:27 -05:00			`- [Qubes Security Bulletin \#44](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-044-2018.txt) (Multiple Xen vulnerabilities (XSA-275, XSA-280))`
Add QSB 45 2018-12-03 20:14:10 -05:00			`- [Qubes Security Bulletin \#45](https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-045-2018.txt) (Insecure default Salt configuration)`
Add XSA-212 2017-04-04 09:29:57 -04:00