CVE-2020-36277

Publication date 11 March 2021

Last updated 16 January 2026

Ubuntu priority

Cvss 3 Severity Score

Leptonica before 1.80.0 allows a denial of service (application crash) via an incorrect left shift in pixConvert2To8 in pixconv.c.

Show unmaintained releases

Package	Ubuntu Release	Status
leptonlib	26.04 LTS resolute	Not affected
	25.10 questing	Not affected
	25.04 plucky	Not affected
	24.10 oracular	Ignored end of life, was needs-triage
	24.04 LTS noble	Not affected
	23.10 mantic	Ignored end of life, was needs-triage
	23.04 lunar	Ignored end of life, was needs-triage
	22.10 kinetic	Ignored end of life, was needs-triage
	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	Vulnerable
	18.04 LTS bionic	Vulnerable
	16.04 LTS xenial	Ignored end of standard support, was needs-triage
	14.04 LTS trusty	Vulnerable

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
leptonlib	Upstream: https://github.com/DanBloomberg/leptonica/pull/499

CVSS version: CVSS v3.0

Base score 7.5 · High

Base metrics

Scores

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