https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Mon, 28 Sep 2026 09:47:30 +0000 https://vulnerability.circl.lu/vuln/cve-2018-1087 <p><strong>Affected:</strong> kernel KVM</p> <p>kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in the way the Linux kernel&#39;s KVM hypervisor handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the stack switch is executed. An unprivileged KVM guest user could use this flaw to crash the guest or, potentially, escalate their privileges in the guest.</p> <p><strong>Affected:</strong> kernel KVM</p> <p>kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in the way the Linux kernel&#39;s KVM hypervisor handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the stack switch is executed. An unprivileged KVM guest user could use this flaw to crash the guest or, potentially, escalate their privileges in the guest.</p> https://vulnerability.circl.lu/vuln/cve-2018-1087 https://vulnerability.circl.lu/vuln/usn-3641-1 <p><strong>Affected:</strong> Ubuntu:14.04:LTS: linux, Ubuntu:14.04:LTS: linux-aws, Ubuntu:14.04:LTS: linux-lts-xenial, Ubuntu:16.04:LTS: linux, Ubuntu:16.04:LTS: linux-aws, Ubuntu:16.04:LTS: linux-azure, Ubuntu:16.04:LTS: linux-euclid, Ubuntu:16.04:LTS: linux-gcp, Ubuntu:16.04:LTS: linux-hwe, Ubuntu:16.04:LTS: linux-kvm and 3 more</p> <p>Nick Peterson discovered that the Linux kernel did not properly handle debug exceptions following a MOV/POP to SS instruction. A local attacker could use this to cause a denial of service (system crash). This issue only affected the amd64 architecture. (CVE-2018-8897)</p> <p>Andy Lutomirski discovered that the KVM subsystem of the Linux kernel did not properly emulate the ICEBP instruction following a MOV/POP to SS instruction. A local attacker in a KVM virtual machine could use this to cause a denial of service (guest VM crash) or possibly escalate privileges inside of the virtual machine. This issue only affected the i386 and amd64 architectures. (CVE-2018-1087)</p> <p>Andy Lutomirski discovered that the Linux kernel did not properly perform error handling on virtualized debug registers. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-1000199)</p> <p><strong>Affected:</strong> Ubuntu:14.04:LTS: linux, Ubuntu:14.04:LTS: linux-aws, Ubuntu:14.04:LTS: linux-lts-xenial, Ubuntu:16.04:LTS: linux, Ubuntu:16.04:LTS: linux-aws, Ubuntu:16.04:LTS: linux-azure, Ubuntu:16.04:LTS: linux-euclid, Ubuntu:16.04:LTS: linux-gcp, Ubuntu:16.04:LTS: linux-hwe, Ubuntu:16.04:LTS: linux-kvm and 3 more</p> <p>Nick Peterson discovered that the Linux kernel did not properly handle debug exceptions following a MOV/POP to SS instruction. A local attacker could use this to cause a denial of service (system crash). This issue only affected the amd64 architecture. (CVE-2018-8897)</p> <p>Andy Lutomirski discovered that the KVM subsystem of the Linux kernel did not properly emulate the ICEBP instruction following a MOV/POP to SS instruction. A local attacker in a KVM virtual machine could use this to cause a denial of service (guest VM crash) or possibly escalate privileges inside of the virtual machine. This issue only affected the i386 and amd64 architectures. (CVE-2018-1087)</p> <p>Andy Lutomirski discovered that the Linux kernel did not properly perform error handling on virtualized debug registers. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-1000199)</p> https://vulnerability.circl.lu/vuln/usn-3641-1