Linux Kernel up to 4.19.2 System Call arch/x86/kvm/lapic.c null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Linux Kernel up to 4.19.2. Affected by this vulnerability is an unknown functionality of the file arch/x86/kvm/lapic.c of the component System Call Handler. The manipulation results in null pointer dereference. This vulnerability is known as CVE-2018-19406. Attacking locally is a requirement. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.19.2 (Operating System). It has been classified as problematic. Affected is an unknown function of the file arch/x86/kvm/lapic.c of the component System Call Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. CVE summarizes:

kvm_pv_send_ipi in arch/x86/kvm/lapic.c in the Linux kernel through 4.19.2 allows local users to cause a denial of service (NULL pointer dereference and BUG) via crafted system calls that reach a situation where the apic map is uninitialized.

The bug was discovered 11/20/2018. The weakness was published 11/21/2018 (Website). The advisory is available at securityfocus.com. This vulnerability is traded as CVE-2018-19406 since 11/20/2018. Local access is required to approach this attack. The successful exploitation requires a authentication. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 120661 (Fedora 28 : kernel / kernel-headers / kernel-tools (2018-a0914af224)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (120661) and SecurityFocus (BID 105988†). Similar entry is available at VDB-127051. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 120661
Nessus Name: Fedora 28 : kernel / kernel-headers / kernel-tools (2018-a0914af224)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

11/20/2018 🔍
11/20/2018 +0 days 🔍
11/20/2018 +0 days 🔍
11/20/2018 +0 days 🔍
11/21/2018 +1 days 🔍
11/21/2018 +0 days 🔍
12/11/2018 +20 days 🔍
01/03/2019 +23 days 🔍
06/11/2023 +1620 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: FEDORA-2018-a0914af224⛔
Status: Not defined

CVE: CVE-2018-19406 (🔍)
GCVE (CVE): GCVE-0-2018-19406
GCVE (VulDB): GCVE-100-127050
SecurityFocus: 105988 - Linux Kernel CVE-2018-19406 Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 11/21/2018 12:10
Updated: 06/11/2023 09:19
Changes: 11/21/2018 12:10 (72), 04/14/2020 12:26 (5), 06/11/2023 09:19 (4)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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