8.3

CVE-2020-14305: linux linux_kernel Out-of-bounds Write

Modified
AliasesUBUNTU-CVE-2020-14305DEBIAN-CVE-2020-14305
Published 02-12-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-14305 is a high (CVSS 8.3) Out-of-bounds Write vulnerability in linux linux_kernel. EPSS estimates a 5.15% chance of exploitation in the next 30 days, higher than 92.4% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (reference, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
8.3/10
010
High · v2.0 (NVD)
EPSS score
5.15%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 5 · Related 2
DLA-2420-1RHSA-2020:4060RHSA-2020:4062SUSE-SU-2021:3929-1SUSE-SU-2021:3935-1

Timeline

  1. 02-12-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An out-of-bounds memory write flaw was found in how the Linux kernel’s Voice Over IP H.323 connection tracking functionality handled connections on ipv6 port 1720. This flaw allows an unauthenticated remote user to crash the system, causing a denial of service. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

5.15%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

No change 0.00 pp

From 5.15% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.openvz.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu24 products
  • linuxAll versions (No fix recorded) | < 4.4.0-187.217
  • linux-aws< 4.4.0-1076.80 | < 4.4.0-1112.124
  • linux-aws-5.0All versions (No fix recorded)
  • linux-azure< 4.13.0-1005.7 | All versions (No fix recorded)
  • linux-azure-5.3All versions (No fix recorded)
Netapp5 products
Debian1 product
  • linux< 4.12.6-1
Linux1 product

4 vendors · 31 products

References

9 links