Red Hat Security Advisory 2020-2171-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include a null pointer vulnerability.
55fdf582995ed3e27dc27b9dcc33893fd3b2930f09f41646e16f46fe73d4e72bRed Hat Security Advisory 2020-2102-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include null pointer and privilege escalation vulnerabilities.
d01822cdefd2a8f7c8259298b15c20b0cf838de3b4b6e40ca1190fff779c9619Debian Linux Security Advisory 4667-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service, or information leak.
16323d64ec34cdde8160250d74f386fe52de579ba9ed063c3eb7063b6b8aa960Paulo Bonzini discovered that the KVM hypervisor implementation in the Linux kernel could improperly let a nested (level 2) guest access the resources of a parent (level 1) guest in certain situations. An attacker could use this to expose sensitive information.
013a0dfba70302c800eab63aa571da076d3bc4a87d14b9f7b138548d27333d78Ubuntu Security Notice 4303-1 - Paulo Bonzini discovered that the KVM hypervisor implementation in the Linux kernel could improperly let a nested guest access the resources of a parent guest in certain situations. An attacker could use this to expose sensitive information.
19a2aa39cb7b99ed562596869073caa967754294d7dc20d5c7895846993212c9Ubuntu Security Notice 4303-2 - USN-4303-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 ESM. Paulo Bonzini discovered that the KVM hypervisor implementation in the Linux kernel could improperly let a nested guest access the resources of a parent guest in certain situations. An attacker could use this to expose sensitive information. Various other issues were also addressed.
6685efdbb34ff65bd6fcb8c9f91ecfd38a0ef75627a42dfb6ec7e3c3e5e386a8Ubuntu Security Notice 4302-1 - Paulo Bonzini discovered that the KVM hypervisor implementation in the Linux kernel could improperly let a nested guest access the resources of a parent guest in certain situations. An attacker could use this to expose sensitive information. Gregory Herrero discovered that the fix for CVE-2019-14615 to address the Linux kernel not properly clearing data structures on context switches for certain Intel graphics processors was incomplete. A local attacker could use this to expose sensitive information. Various other issues were also addressed.
3f65e5ffbc3857537bf6869a1491356bedce6b14cb08f5e1b25c6d6d2862ecd3Ubuntu Security Notice 4301-1 - It was discovered that the KVM implementation in the Linux kernel, when paravirtual TLB flushes are enabled in guests, the hypervisor in some situations could miss deferred TLB flushes or otherwise mishandle them. An attacker in a guest VM could use this to expose sensitive information. Paulo Bonzini discovered that the KVM hypervisor implementation in the Linux kernel could improperly let a nested guest access the resources of a parent guest in certain situations. An attacker could use this to expose sensitive information. Various other issues were also addressed.
269944e1ef0959ae514fa6db160519c225d3852a7f65698a7db6b401b856d3e3Ubuntu Security Notice 4300-1 - It was discovered that the KVM implementation in the Linux kernel, when paravirtual TLB flushes are enabled in guests, the hypervisor in some situations could miss deferred TLB flushes or otherwise mishandle them. An attacker in a guest VM could use this to expose sensitive information. Paulo Bonzini discovered that the KVM hypervisor implementation in the Linux kernel could improperly let a nested guest access the resources of a parent guest in certain situations. An attacker could use this to expose sensitive information. Various other issues were also addressed.
b468ac55cd20250f22d00466a715a70bdabc3df5373bb1bced4e3cc116c67029
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