CVE-2021-36081

Publication date 1 July 2021

Last updated 16 January 2026

Ubuntu priority

Cvss 3 Severity Score

Tesseract OCR 5.0.0-alpha-20201231 has a one_ell_conflict use-after-free during a strpbrk call.

Show unmaintained releases

Package	Ubuntu Release	Status
tesseract	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	Vulnerable
	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	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

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

Package	Patch details
tesseract	Upstream: e6f1562

CVSS version: CVSS v3.0

Base score 7.8 · High

Base metrics

Scores

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