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.
Does this matter?
Lower severity and a low EPSS score (0.48%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.0
- 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.48% probability · 41th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel · canonical/ubuntu linux
- Source
- cve@mitre.org
EPSS 0.5% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/105987Third Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
- https://lkml.org/lkml/2018/11/20/580Patch, Third Party Advisory
- https://usn.ubuntu.com/3871-1/Third Party Advisory
- https://usn.ubuntu.com/3871-3/Third Party Advisory
- https://usn.ubuntu.com/3871-4/Third Party Advisory
- https://usn.ubuntu.com/3871-5/Third Party Advisory
- https://usn.ubuntu.com/3872-1/Third Party Advisory
- https://usn.ubuntu.com/3878-1/Third Party Advisory
- https://usn.ubuntu.com/3878-2/Third Party Advisory
- https://usn.ubuntu.com/3879-1/Third Party Advisory
- https://usn.ubuntu.com/3879-2/Third Party Advisory
- http://www.securityfocus.com/bid/105987Third Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
- https://lkml.org/lkml/2018/11/20/580Patch, Third Party Advisory
- https://usn.ubuntu.com/3871-1/Third Party Advisory
- https://usn.ubuntu.com/3871-3/Third Party Advisory
- https://usn.ubuntu.com/3871-4/Third Party Advisory
- https://usn.ubuntu.com/3871-5/Third Party Advisory
- https://usn.ubuntu.com/3872-1/Third Party Advisory
- https://usn.ubuntu.com/3878-1/Third Party Advisory
- https://usn.ubuntu.com/3878-2/Third Party Advisory
- https://usn.ubuntu.com/3879-1/Third Party Advisory
- https://usn.ubuntu.com/3879-2/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.