Description
The ioapic_read_indirect function in virt/kvm/ioapic.c in the Linux kernel through 3.8.4 does not properly handle a certain combination of invalid IOAPIC_REG_SELECT and IOAPIC_REG_WINDOW operations, which allows guest OS users to obtain sensitive information from host OS memory or cause a denial of service (host OS OOPS) via a crafted application.
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 | 3.2.41-2 | — |
| Debian 13 | linux | 3.2.41-2 | — |
| Debian 12 | linux | 3.2.41-2 | — |
| Debian 6.0 | linux-2.6 | 2.6.32-48squeeze3 | DSA-2668-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | linux | 4.15.0-96.97 | LSN-0065-1 |
| Ubuntu Pro 18.04 LTS | linux-azure | 5.0.0-1036.38 | LSN-0065-1 |
| Ubuntu Pro 18.04 LTS | linux-gcp | 5.0.0-1034.35 | LSN-0065-1 |
| Ubuntu Pro 16.04 LTS | linux | 4.4.0-177.207 | LSN-0065-1 |
| Ubuntu Pro 16.04 LTS | linux-aws | 4.4.0-1105.116 | LSN-0065-1 |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1077.82 | LSN-0065-1 |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-96.97~16.04.1 | LSN-0065-1 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-177.207~14.04.1 | LSN-0065-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +15 | 2.6.32-358.6.1.el6 | RHSA-2013:0744 |
| RHEL 6 | rhev-hypervisor6 | 6.4-20130415.0.el6_4 | RHSA-2013:0746 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Virtualization 5 | kvm +4 | 83-262.el5_9.3 | RHSA-2013:0727 |
| RHEL 6.3 EUS | perf +15 | 2.6.32-279.31.1.el6 | RHSA-2013:0928 |
| RHEL 6.2 EUS | perf +15 | 2.6.32-220.39.1.el6 | RHSA-2013:1026 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | perf +10 | 4.14.35-1902.302.2.el7uek | ELSA-2020-5676 |
Advisories 8
- RHSA-2013:1026 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2013:0928 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2013:0744 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2013:0746 Red Hat Security Advisory: rhev-hypervisor6 security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2013:0727 Red Hat Security Advisory: kvm security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- LSN-0065-1 Kernel Live Patch Security Notice Ubuntu Security Notices (USN) · Jun 3, 2026
- DSA-2668-1 linux-2.6 - several Debian Security (DSA / DLA) · Mar 9, 2026
- ELSA-2020-5676 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 11, 2020
References
- openSUSE-SU-2013:0847 vendor-advisory
- openSUSE-SU-2013:1187 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a2c118bfab8bc6b8bb213abfc35201e441693d55
- https://github.com/torvalds/linux/commit/a2c118bfab8bc6b8bb213abfc35201e441693d55
- USN-1812-1 vendor-advisory
- MDVSA-2013:176 vendor-advisory
- RHSA-2013:0928 vendor-advisory
- USN-1809-1 vendor-advisory
- RHSA-2013:0727 vendor-advisory
- [oss-security] 20130320 linux kernel: kvm: CVE-2013-179[6..8] mailing-list
- RHSA-2013:0744 vendor-advisory
- RHSA-2013:0746 vendor-advisory
- USN-1813-1 vendor-advisory
- openSUSE-SU-2013:0925 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=917017
- RHSA-2013:1026 vendor-advisory
- http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html