Описание
An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system.
Ссылки
- Mailing ListThird Party Advisory
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- Third Party AdvisoryVDB Entry
- Third Party AdvisoryVDB Entry
- Mailing ListPatchThird Party Advisory
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- Issue TrackingMitigationPatchThird Party Advisory
- Mailing ListThird Party Advisory
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- Issue TrackingMailing ListThird Party Advisory
Уязвимые конфигурации
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Одновременно
Одновременно
Одновременно
Одновременно
Одновременно
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Одновременно
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Одновременно
Одно из
Одно из
EPSS
7.5 High
CVSS3
8.8 High
CVSS3
7.2 High
CVSS2
Дефекты
Связанные уязвимости
An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system.
An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system.
An out-of-bounds access issue was found in the Linux kernel, all versi ...
An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system.
ELSA-2019-4800: Unbreakable Enterprise kernel security update (IMPORTANT)
EPSS
7.5 High
CVSS3
8.8 High
CVSS3
7.2 High
CVSS2