Tracker / CVE-2019-14821
CVE-2019-14821
High 8.8
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.
Affected products and versions
| canonical | ubuntu_linux |
|---|---|
| debian | debian_linux |
| fedoraproject | fedora |
| linux | linux_kernel |
| linux | linux_kernel · 2.6.27 → 3.15.10 |
| linux | linux_kernel · 3.16 → 3.16.74 |
| linux | linux_kernel · 4.14 → 4.14.146 |
| linux | linux_kernel · 4.19 → 4.19.75 |
| linux | linux_kernel · 4.4 → 4.4.194 |
| linux | linux_kernel · 4.9 → 4.9.194 |
| linux | linux_kernel · 5.2 → 5.2.17 |
| linux | linux_kernel · 5.3 → 5.3.1 |
| netapp | aff_a700s_firmware |
| netapp | data_availability_services |
| netapp | h300e_firmware |
| netapp | h300s_firmware |
| netapp | h410c_firmware |
| netapp | h410s_firmware |
| netapp | h500e_firmware |
| netapp | h500s_firmware |
| netapp | h610s_firmware |
| netapp | h700e_firmware |
| netapp | h700s_firmware |
| netapp | hci_management_node |
| netapp | solidfire |
| opensuse | leap |
| oracle | sd-wan_edge |
| redhat | enterprise_linux |
| redhat | enterprise_linux_desktop |
| redhat | enterprise_linux_eus |
| redhat | enterprise_linux_for_real_time |
| redhat | enterprise_linux_server |
| redhat | enterprise_linux_server_aus |
| redhat | enterprise_linux_server_tus |
| redhat | enterprise_linux_workstation |
| redhat | virtualization_host |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.