| Revision Date: | 2012-01-27 | Version: | 1 | | Title: | CVE-2011-4622 on Ubuntu 14.04 LTS (trusty) - low. | | Description: | The create_pit_timer function in arch/x86/kvm/i8254.c in KVM 83, and possibly other versions, does not properly handle when Programmable Interval Timer (PIT) interrupt requests (IRQs) when a virtual interrupt controller (irqchip) is not available, which allows local users to cause a denial of service (NULL pointer dereference) by starting a timer. The create_pit_timer function in arch/x86/kvm/i8254.c in KVM 83, and possibly other versions, does not properly handle when Programmable Interval Timer (PIT) interrupt requests (IRQs) when a virtual interrupt controller (irqchip) is not available, which allows local users to cause a denial of service (NULL pointer dereference) by starting a timer. BUG: unable to handle kernel NULL pointer dereference at 0000000000000128 IP: [] kvm_set_irq+0x30/0x170 [kvm] ... Call Trace: [] pit_do_work+0x51/0xd0 [kvm] [] process_one_work+0x111/0x4d0 [] worker_thread+0x152/0x340 [] kthread+0x7e/0x90 [] kernel_thread_helper+0x4/0x10 A flaw was found in KVM's Programmable Interval Timer (PIT). When a virtual interrupt control is not available a local user could use this to cause a denial of service by starting a timer.
| | Family: | unix | Class: | vulnerability | | Status: | | Reference(s): | CVE-2011-4622
| | Platform(s): | Ubuntu 14.04 LTS
| Product(s): | | | Definition Synopsis | | Ubuntu 14.04 LTS (trusty) is installed. AND Package Information
NOT While related to the CVE in some way, the 'linux' package in trusty is not affected (note: '3.11.0-12.19').
OR NOT While related to the CVE in some way, the 'linux-aws' package in trusty is not affected (note: '4.4.0-1002.2').
OR NOT While related to the CVE in some way, the 'linux-flo' package in trusty is not affected (note: '3.4.0-1.3').
OR NOT While related to the CVE in some way, the 'linux-goldfish' package in trusty is not affected (note: '3.4.0-1.9').
OR While related to the CVE in some way, a decision has been made to ignore it (note: 'abandoned').
OR NOT While related to the CVE in some way, the 'linux-lts-utopic' package in trusty is not affected (note: '3.16.0-25.33~14.04.2').
OR NOT While related to the CVE in some way, the 'linux-lts-vivid' package in trusty is not affected (note: '3.19.0-18.18~14.04.1').
OR NOT While related to the CVE in some way, the 'linux-lts-wily' package in trusty is not affected (note: '4.2.0-18.22~14.04.1').
OR NOT While related to the CVE in some way, the 'linux-lts-xenial' package in trusty is not affected (note: '4.4.0-13.29~14.04.1').
OR While related to the CVE in some way, a decision has been made to ignore it (note: 'abandoned').
OR NOT While related to the CVE in some way, the 'linux-mako' package in trusty is not affected (note: '3.4.0-3.21').
OR NOT While related to the CVE in some way, the 'linux-manta' package in trusty is not affected (note: '3.4.0-4.19').
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