CVE-2021-20266

Publication date 30 April 2021

Last updated 25 August 2025

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

4.9 · Medium

Score breakdown

Description

A flaw was found in RPM's hdrblobInit() in lib/header.c. This flaw allows an attacker who can modify the rpmdb to cause an out-of-bounds read. The highest threat from this vulnerability is to system availability.

Read the notes from the security team

Status

Package Ubuntu Release Status
rpm 25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar
Not affected
22.10 kinetic
Not affected
22.04 LTS jammy
Not affected
21.10 impish Ignored end of life
21.04 hirsute Ignored end of life
20.10 groovy Ignored end of life
20.04 LTS focal
Fixed 4.14.2.1+dfsg1-1ubuntu0.1~esm1
18.04 LTS bionic
Fixed 4.14.1+dfsg1-2ubuntu0.1~esm1
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected

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Notes

seth-arnold

Only debugedit and librpmio9 binary packages are in main, and triaged with view to how they are used in the build process as described in https://bugs.launchpad.net/ubuntu/+source/rpm/+bug/1913871

Severity score breakdown

CVSS version: CVSS v3.0

Base score 4.9 · Medium

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-5273-1
    • RPM Package Manager vulnerabilities
    • 21 July 2022

Other references

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