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UBUNTU-CVE-2018-19407 Moderate

UBUNTU-CVE-2018-19407

The vcpu_scan_ioapic function in arch/x86/kvm/x86.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 ioapic is uninitialized.

Exploit probability Not scored
Published November 20, 2018
Required by Not available
Last source change April 22, 2026

02 / AFFECTED SOFTWARE

Affected packages

Ubuntu:14.04:LTS linux-aws

24 explicit affected versions

Ubuntu:14.04:LTS linux-azure

6 explicit affected versions

Ubuntu:14.04:LTS linux-lts-xenial

64 explicit affected versions

Ubuntu:16.04:LTS linux

86 explicit affected versions

Ubuntu:16.04:LTS linux-aws

45 explicit affected versions

Ubuntu:16.04:LTS linux-aws-hwe

2 explicit affected versions

Ubuntu:16.04:LTS linux-azure

29 explicit affected versions

Ubuntu:16.04:LTS linux-gcp

25 explicit affected versions

Ubuntu:16.04:LTS linux-hwe

45 explicit affected versions

Ubuntu:16.04:LTS linux-kvm

24 explicit affected versions

Ubuntu:16.04:LTS linux-raspi2

58 explicit affected versions

Ubuntu:16.04:LTS linux-snapdragon

56 explicit affected versions

Ubuntu:18.04:LTS linux

23 explicit affected versions

Ubuntu:18.04:LTS linux-aws

18 explicit affected versions

Ubuntu:18.04:LTS linux-azure

20 explicit affected versions

Ubuntu:18.04:LTS linux-gcp

17 explicit affected versions

Ubuntu:18.04:LTS linux-gcp-edge

2 explicit affected versions

Ubuntu:18.04:LTS linux-hwe

1 explicit affected versions

Ubuntu:18.04:LTS linux-kvm

18 explicit affected versions

Ubuntu:18.04:LTS linux-oem

15 explicit affected versions

Ubuntu:18.04:LTS linux-raspi2

20 explicit affected versions

Ubuntu:20.04:LTS linux-azure-fde

26 explicit affected versions

Ubuntu:20.04:LTS linux-gke

51 explicit affected versions

Ubuntu:20.04:LTS linux-raspi2

6 explicit affected versions

Ubuntu:20.04:LTS linux-riscv

12 explicit affected versions

Ubuntu:22.04:LTS linux-intel-iot-realtime

1 explicit affected versions

Ubuntu:22.04:LTS linux-realtime

1 explicit affected versions

Ubuntu:22.04:LTS linux-riscv

23 explicit affected versions

Ubuntu:24.04:LTS linux-raspi-realtime

1 explicit affected versions

Ubuntu:Pro:FIPS:16.04:LTS linux-fips

3 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

related USN-3878-1
related USN-3878-2

04 / EVIDENCE

Source records

Open Source Vulnerabilities UBUNTU-CVE-2018-19407

The vcpu_scan_ioapic function in arch/x86/kvm/x86.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 ioapic is uninitialized.

View original source

05 / REFERENCES

Further evidence