CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 0CVE-2018-15471 – Ubuntu Security Notice USN-3819-1
https://notcve.org/view.php?id=CVE-2018-15471
17 Aug 2018 — An issue was discovered in xenvif_set_hash_mapping in drivers/net/xen-netback/hash.c in the Linux kernel through 4.18.1, as used in Xen through 4.11.x and other products. The Linux netback driver allows frontends to control mapping of requests to request queues. When processing a request to set or change this mapping, some input validation (e.g., for an integer overflow) was missing or flawed, leading to OOB access in hash handling. A malicious or buggy frontend may cause the (usually privileged) backend to... • http://xenbits.xen.org/xsa/advisory-270.html • CWE-125: Out-of-bounds Read •
CVSS: 6.0EPSS: 0%CPEs: 1EXPL: 0CVE-2018-15468 – Gentoo Linux Security Advisory 201810-06
https://notcve.org/view.php?id=CVE-2018-15468
17 Aug 2018 — An issue was discovered in Xen through 4.11.x. The DEBUGCTL MSR contains several debugging features, some of which virtualise cleanly, but some do not. In particular, Branch Trace Store is not virtualised by the processor, and software has to be careful to configure it suitably not to lock up the core. As a result, it must only be available to fully trusted guests. Unfortunately, in the case that vPMU is disabled, all value checking was skipped, allowing the guest to choose any MSR_DEBUGCTL setting it likes... • http://xenbits.xen.org/xsa/advisory-269.html • CWE-863: Incorrect Authorization •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 0CVE-2018-15469 – Gentoo Linux Security Advisory 201810-06
https://notcve.org/view.php?id=CVE-2018-15469
17 Aug 2018 — An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG() checks. An unprivileged guest can cause a BUG() check in the hypervisor, resulting in a denial-of-service (crash). Se ha descubierto un problema en Xen hasta las versiones 4.11.x. • http://xenbits.xen.org/xsa/advisory-268.html • CWE-400: Uncontrolled Resource Consumption •
CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 0CVE-2018-14678 – Ubuntu Security Notice USN-3931-2
https://notcve.org/view.php?id=CVE-2018-14678
28 Jul 2018 — An issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S does not properly maintain RBX, which allows local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges. Se ha descubierto un problema en el kernel de Linux hasta la versión 4.17.11, tal y como se utiliza en Xen hasta la... • http://www.securityfocus.com/bid/104924 • CWE-665: Improper Initialization •