CVE-2021-26945

Publication date 8 June 2021

Last updated 11 July 2025

Ubuntu priority

Cvss 3 Severity Score

Description

An integer overflow leading to a heap-buffer overflow was found in OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
openexr	25.10 questing	Needs evaluation
	25.04 plucky	Needs evaluation
	24.10 oracular	Ignored end of life, was needs-triage
	24.04 LTS noble	Needs evaluation
	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	Needs evaluation
	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	Needs evaluation
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not in release

Notes

mdeslaur

it looks like the fix for this issue actually went into the exrcheck tool used by the fuzzer

Patch details

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

Package	Patch details
openexr	Upstream: https://github.com/AcademySoftwareFoundation/openexr/pull/930/commits/0445bd02f9b70d6f9d82d270f5b9d1ad86f3bccc Upstream: https://github.com/AcademySoftwareFoundation/openexr/pull/930/commits/b73ec53bd24ba116d7bf48ebdc868301c596706e

Severity score breakdown

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H