7.5

CVE-2018-20191: canonical ubuntu_linux NULL Pointer Dereference

CVSS: 7.5v3.1HighModified
AliasesDEBIAN-CVE-2018-20191
Published 20-12-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-20191 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in canonical ubuntu_linux. EPSS estimates a 3.72% chance of exploitation in the next 30 days, higher than 89.6% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
3.72%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2024:11287-1

Timeline

  1. 20-12-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

hw/rdma/vmw/pvrdma_main.c in QEMU does not implement a read operation (such as uar_read by analogy to uar_write), which allows attackers to cause a denial of service (NULL pointer dereference).

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

3.72%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

0.00 pp

From 3.72% on 20-09-2026

20-09-202620-10-2026
EPSS score
3.72%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Canonical1 product
Debian1 product
  • qemu< 1:4.1-1
Fedoraproject1 product
Qemu1 product

4 vendors · 4 products

References

7 links