Vulnerability Details : 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.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2018-19407
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-19407
0.03%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 8 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-19407
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2018-19407
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-19407
-
https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
[SECURITY] [DLA 1715-1] linux-4.9 security update
-
https://lkml.org/lkml/2018/11/20/580
LKML: Wanpeng Li: [PATCH] KVM: X86: Fix scan ioapic use-before-initializationPatch;Third Party Advisory
-
https://usn.ubuntu.com/3871-3/
USN-3871-3: Linux kernel (AWS, GCP, KVM, OEM, Raspberry Pi 2) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/3878-2/
USN-3878-2: Linux kernel (Azure) vulnerabilities | Ubuntu security noticesThird Party Advisory
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https://usn.ubuntu.com/3872-1/
USN-3872-1: Linux kernel (HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
http://www.securityfocus.com/bid/105987
Linux Kernel CVE-2018-19407 Local Denial of Service VulnerabilityThird Party Advisory;VDB Entry
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https://usn.ubuntu.com/3871-1/
USN-3871-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/3879-2/
USN-3879-2: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/3878-1/
USN-3878-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/3871-4/
USN-3871-4: Linux kernel (HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/3879-1/
USN-3879-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/3871-5/
USN-3871-5: Linux kernel (Azure) vulnerabilities | Ubuntu security noticesThird Party Advisory
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