Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2019-14821

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 27.9%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 7.2
References
Products affected by CVE-2019-14821


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