CVE-2019-14821

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Source
https://cve.org/CVERecord?id=CVE-2019-14821
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-14821.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2019-14821
Downstream
Related
Published
2019-09-19T18:15:10Z
Modified
2026-04-16T01:38:45Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Git /

Affected ranges

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-14821.json"
unresolved_ranges 
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                "introduced":  "2.6.27"
            },
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    },
    {
        "events":  [
            {
                "introduced":  "3.16"
            },
            {
                "fixed":  "3.16.74"
            }
        ]
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    {
        "events":  [
            {
                "introduced":  "4.4"
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            {
                "fixed":  "4.4.194"
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        "events":  [
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                "introduced":  "4.9"
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            {
                "introduced":  "4.14"
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            {
                "fixed":  "4.14.146"
            }
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    {
        "events":  [
            {
                "introduced":  "4.19"
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                "fixed":  "4.19.75"
            }
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]