7.5

CVE-2020-15890: canonical ubuntu_linux Out-of-bounds Read

Modified
AliasesALPINE-CVE-2020-15890MGASA-2020-0342UBUNTU-CVE-2020-15890
Published 21-07-2020Last modified 03-11-2025

Vulnerability summary

CVE-2020-15890 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in canonical ubuntu_linux. EPSS estimates a 3.13% chance of exploitation in the next 30 days, higher than 87.8% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (GitHub, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
3.13%
0%100%
Low · -0.09 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 2
DLA-4283-1RHBA-2020:3172

Timeline

  1. 21-07-2020
    PublishedVulnerability first disclosed.
  2. 03-11-2025
    Last modifiedVulnerability information updated.

Description

LuaJit through 2.1.0-beta3 has an out-of-bounds read because __gc handler frame traversal is mishandled.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

3.13%

Chance of exploitation in the next 30 days

Percentile

88%

Versus all other CVEs

30-day change

Decrease -0.09 pp

From 3.21% 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
  • githubUnverified

    Luajit

    Maturity: poc

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.

Debian2 products
  • luajit< 2.0.4+dfsg-1+deb9u1 | < 2.1.0~beta3+git20210112+dfsg-2
  • debian_linuxEOL9.0
Alpine1 product
  • luajit< 2.2.0-r3
Canonical1 product
Luajit1 product
  • luajit≤ 2.0.5 | 2.1.0:beta1 | 2.1.0:beta2 | 2.1.0:beta3
Mageia1 product
  • luajit< 2.1.0-0.beta3.5.mga7
Ubuntu1 product
  • luajitAll versions (No fix recorded) | < 2.0.4+dfsg-1+deb9u1build0.16.04.1

6 vendors · 7 products

References

12 links
Show all 12 references