gsd-2018-16882
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
A use-after-free issue was found in the way the Linux kernel's KVM hypervisor processed posted interrupts when nested(=1) virtualization is enabled. In nested_get_vmcs12_pages(), in case of an error while processing posted interrupt address, it unmaps the 'pi_desc_page' without resetting 'pi_desc' descriptor address, which is later used in pi_test_and_clear_on(). A guest user/process could use this flaw to crash the host kernel resulting in DoS or potentially gain privileged access to a system. Kernel versions before 4.14.91 and before 4.19.13 are vulnerable.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2018-16882",
"description": "A use-after-free issue was found in the way the Linux kernel\u0027s KVM hypervisor processed posted interrupts when nested(=1) virtualization is enabled. In nested_get_vmcs12_pages(), in case of an error while processing posted interrupt address, it unmaps the \u0027pi_desc_page\u0027 without resetting \u0027pi_desc\u0027 descriptor address, which is later used in pi_test_and_clear_on(). A guest user/process could use this flaw to crash the host kernel resulting in DoS or potentially gain privileged access to a system. Kernel versions before 4.14.91 and before 4.19.13 are vulnerable.",
"id": "GSD-2018-16882",
"references": [
"https://www.suse.com/security/cve/CVE-2018-16882.html",
"https://ubuntu.com/security/CVE-2018-16882",
"https://advisories.mageia.org/CVE-2018-16882.html",
"https://linux.oracle.com/cve/CVE-2018-16882.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
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],
"details": "A use-after-free issue was found in the way the Linux kernel\u0027s KVM hypervisor processed posted interrupts when nested(=1) virtualization is enabled. In nested_get_vmcs12_pages(), in case of an error while processing posted interrupt address, it unmaps the \u0027pi_desc_page\u0027 without resetting \u0027pi_desc\u0027 descriptor address, which is later used in pi_test_and_clear_on(). A guest user/process could use this flaw to crash the host kernel resulting in DoS or potentially gain privileged access to a system. Kernel versions before 4.14.91 and before 4.19.13 are vulnerable.",
"id": "GSD-2018-16882",
"modified": "2023-12-13T01:22:26.052911Z",
"schema_version": "1.4.0"
}
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}
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"authentication": "NONE",
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"baseScore": 7.2,
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},
"lastModifiedDate": "2023-01-19T16:04Z",
"publishedDate": "2019-01-03T16:29Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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