Description
Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest OS users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 3.16.7-ckt9-1 | — |
| Debian 13 | linux | 3.16.7-ckt9-1 | — |
| Debian 12 | linux | 3.16.7-ckt9-1 | — |
| Debian 8 | linux | 3.16.7-ckt9-3~deb8u1 | DSA-3237-1 |
| Debian 7 | linux | 3.2.68-1+deb7u1 | DSA-3237-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-riscv +6 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +4 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +3 | No fix yet | — |
| Ubuntu 14.04 LTS | linux | 3.13.0-53.88 | USN-2614-1 |
| Ubuntu 14.04 LTS | linux-lts-utopic | 3.16.0-36.48~14.04.1 | USN-2589-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | kernel-docs | 3.12.39-47.3 | SUSE-SU-2015:0658-1 |
| SLES 12 | kernel-ec2 +4 | 3.12.39-47.1 | SUSE-SU-2015:0658-1 |
| SLES 12 | kernel-obs-build | 3.12.39-47.2 | SUSE-SU-2015:0658-1 |
| SLES 11 SP4 | kernel-docs | 3.0.101-65.3 | SUSE-SU-2015:1678-1 |
| SLES 11 SP4 | kernel-ec2 +7 | 3.0.101-65.1 | SUSE-SU-2015:1678-1 |
| SLES 11 SP3 | kernel-ec2 +8 | 3.0.101-0.47.67.2 | SUSE-SU-2015:1611-1 |
| SLES 11 SP2 | kernel-ec2 +6 | 3.0.101-0.7.37.1 | SUSE-SU-2015:1478-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | kernel-xen +3 | 3.12.39-47.1 | SUSE-SU-2015:0658-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +7 | 3.0.101-65.1 | SUSE-SU-2015:1678-1 |
| SLES for SAP 11 SP3 | kernel-ec2 +8 | 3.0.101-0.47.67.2 | SUSE-SU-2015:1611-1 |
| SLE Real Time 11 SP3 | kernel-rt +3 | 3.0.101.rt130-0.33.40.1 | SUSE-SU-2015:1592-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_4 | 1-2.1 | SUSE-SU-2015:0658-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-68.1.2.el6uek +1 | 0.4.3-4.el6 | ELSA-2015-3035, ELSA-2015-3019 |
| Oracle Linux 7 | dtrace-modules-3.8.13-68.1.2.el7uek +1 | 0.4.3-4.el7 | ELSA-2015-3035, ELSA-2015-3019 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-68.1.2.el7uek | ELSA-2015-3035, ELSA-2015-3019 |
Advisories 10
- USN-2614-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3237-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2589-1 linux-lts-utopic vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2015:1478-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1678-1 Security update for kernel-source SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:0658-1 Security Update for Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1611-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1592-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2015-3035 Important: Unbreakable Enterprise kernel security and bugfix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 13, 2015
- ELSA-2015-3019 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 31, 2015
References
- USN-2631-1 vendor-advisory
- http://www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-423503.htm
- https://github.com/torvalds/linux/commit/af6fc858a35b90e89ea7a7ee58e66628c55c776b
- SUSE-SU-2015:0658 vendor-advisory
- USN-2632-1 vendor-advisory
- FEDORA-2015-6100 vendor-advisory
- FEDORA-2015-6294 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- SUSE-SU-2015:1611 vendor-advisory
- DSA-3237 vendor-advisory
- FEDORA-2015-6320 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1196266
- http://xenbits.xen.org/xsa/advisory-120.html
- SUSE-SU-2015:1478 vendor-advisory
- 1031902 vdb-entry
- FEDORA-2015-4066 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=af6fc858a35b90e89ea7a7ee58e66628c55c776b
- 73014 vdb-entry
- SUSE-SU-2015:1592 vendor-advisory
- 1031806 vdb-entry
- 20190813 [SECURITY] [DSA 4497-1] linux security update mailing-list