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CVE-2015-7513

Status Candidate

Overview

arch/x86/kvm/x86.c in the Linux kernel before 4.4 does not reset the PIT counter values during state restoration, which allows guest OS users to cause a denial of service (divide-by-zero error and host OS crash) via a zero value, related to the kvm_vm_ioctl_set_pit and kvm_vm_ioctl_set_pit2 functions.

Related Files

Ubuntu Security Notice USN-2890-2
Posted Feb 2, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2890-2 - It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2013-7446, CVE-2015-7513, CVE-2015-7550, CVE-2015-7990, CVE-2015-8374, CVE-2015-8543, CVE-2015-8569, CVE-2015-8575, CVE-2015-8787
SHA-256 | 3017b113d92983c899f5afeb5d0837516181dd39dc3b825adc1dc5398c097593
Ubuntu Security Notice USN-2890-1
Posted Feb 2, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2890-1 - It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2013-7446, CVE-2015-7513, CVE-2015-7550, CVE-2015-7990, CVE-2015-8374, CVE-2015-8543, CVE-2015-8569, CVE-2015-8575, CVE-2015-8787
SHA-256 | 7e32a7f6bd16cb21244db5518db99454b3180703f06d5108438bd7cd22d6b567
Ubuntu Security Notice USN-2889-2
Posted Feb 2, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2889-2 - It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2013-7446, CVE-2015-7513, CVE-2015-7990, CVE-2015-8374, CVE-2015-8787
SHA-256 | 564b31acd29d4309f6d5ed60bee09df545d4e7fc86af07e6de9e7651c80d6535
Ubuntu Security Notice USN-2889-1
Posted Feb 2, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2889-1 - It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2013-7446, CVE-2015-7513, CVE-2015-7990, CVE-2015-8374, CVE-2015-8787
SHA-256 | 2f15c368215fa57346ae83a6f4368ff920466293d1af15e29957cc7653bd3e9a
Ubuntu Security Notice USN-2888-1
Posted Feb 2, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2888-1 - It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2013-7446, CVE-2015-7513, CVE-2015-7550, CVE-2015-7990, CVE-2015-8374, CVE-2015-8543, CVE-2015-8569, CVE-2015-8575
SHA-256 | 8dcda68c9a619fd87faff8f074fba6ebbf378808c7a0d0aad614c4a46fbe15ee
Ubuntu Security Notice USN-2887-2
Posted Feb 2, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2887-2 - It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2013-7446, CVE-2015-7513, CVE-2015-7990, CVE-2015-8374
SHA-256 | 2501071a312e0e7869161e733b88900ff7fdcc87e9630c5cc3ad2a7e788ff1d2
Ubuntu Security Notice USN-2887-1
Posted Feb 2, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2887-1 - It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2013-7446, CVE-2015-7513, CVE-2015-7990, CVE-2015-8374
SHA-256 | 085e1d9c599d653a0ca365ddbce48e44ce97b9ce6d96f3bea947c22ef3e8d0df
Ubuntu Security Notice USN-2886-1
Posted Feb 2, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2886-1 - It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2013-7446, CVE-2015-7513, CVE-2015-7799, CVE-2015-7990, CVE-2015-8374, CVE-2015-8543, CVE-2015-8569, CVE-2015-8575, CVE-2015-8785
SHA-256 | 24d6d7ae8c64e0028b98928f5ea1fa07cc6257b83053299993d4ac0a54e5d3e1
Ubuntu Security Notice USN-2890-3
Posted Feb 2, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2890-3 - It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2013-7446, CVE-2015-7513, CVE-2015-7550, CVE-2015-7990, CVE-2015-8374, CVE-2015-8543, CVE-2015-8569, CVE-2015-8575, CVE-2015-8787
SHA-256 | 3c1fd9107abb37a2665cc487b029ad27a16d374ef098661f586ea50924991389
Ubuntu Security Notice USN-2886-2
Posted Feb 2, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2886-2 - It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2013-7446, CVE-2015-7513, CVE-2015-7799, CVE-2015-7990, CVE-2015-8374, CVE-2015-8543, CVE-2015-8550, CVE-2015-8569, CVE-2015-8575, CVE-2015-8785
SHA-256 | f224ae824b3b14b9ca929cf40a2e3f6f5db08bd558114527506befeea164e26a
Debian Security Advisory 3434-1
Posted Jan 5, 2016
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3434-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leak.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2015-7513, CVE-2015-7550, CVE-2015-8543, CVE-2015-8550, CVE-2015-8551, CVE-2015-8552, CVE-2015-8569, CVE-2015-8575, CVE-2015-8709
SHA-256 | f1141a8de6449e71f448b35c2f5555c825d9e8cd9ccb92406b4982ef5187cd2b
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