Vulnerability CVE-2018-19407
Published: 2018-11-20   Modified: 2018-11-21

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.

Type:

CWE-476

 (NULL Pointer Dereference)

CVSS2 => (AV:L/AC:L/Au:N/C:N/I:N/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.9/10
6.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Linux -> Linux kernel 
Canonical -> Ubuntu linux 

 References:
http://www.securityfocus.com/bid/105987
https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
https://lkml.org/lkml/2018/11/20/580
https://usn.ubuntu.com/3871-1/
https://usn.ubuntu.com/3871-3/
https://usn.ubuntu.com/3871-4/
https://usn.ubuntu.com/3871-5/
https://usn.ubuntu.com/3872-1/
https://usn.ubuntu.com/3878-1/
https://usn.ubuntu.com/3878-2/
https://usn.ubuntu.com/3879-1/
https://usn.ubuntu.com/3879-2/
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