Date: Thu, 19 Jan 2017 16:42:09 +0530 (IST) From: P J P <ppandit@...hat.com> To: oss security list <oss-security@...ts.openwall.com> cc: Xiaohan Zhang <zhangxiaohan1@...wei.com> Subject: CVE-2017-2583 Kernel: Kvm: vmx/svm potential privilege escalation inside guest Hello, Linux kernel built with the Kernel-based Virtual Machine(CONFIG_KVM) support is vulnerable an incorrect segment selector(SS) value error. It could occur loading values into SS register in long mode. A user/process inside guest could use this flaw to crash the guest resulting in DoS or potentially escalate their privileges inside guest. Upstream patch: --------------- -> https://git.kernel.org/linus/33ab91103b3415e12457e3104f0e4517ce12d0f3 Reference: ---------- -> https://bugzilla.redhat.com/show_bug.cgi?id=1414735 Note: On Intel CPUs it'd corrupt the guest state resulting in DoS; Whereas on AMD CPUs it could potentially escalate privileges inside guest. This issue was discovered by Xiaohan Zhang of Huawei Inc. 'CVE-2017-2583' was assigned to this issue by Red Hat Inc. Thank you. -- Prasad J Pandit / Red Hat Product Security Team 47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F
Powered by blists - more mailing lists
Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.