CVE-2021-45942

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-01-01 · updated 2026-06-17
Weakness: CWE-787

Description

OpenEXR 3.1.x before 3.1.4 has a heap-based buffer overflow in Imf_3_1::LineCompositeTask::execute (called from IlmThread_3_1::NullThreadPoolProvider::addTask and IlmThread_3_1::ThreadPool::addGlobalTask). NOTE: db217f2 may be inapplicable.

Affected products

Debian Linux: 10.0, 11.0
Fedoraproject Fedora: 34, 35, 36
AcademySoftwareFoundation openexr: from 3.1.0 before 3.1.4 — fixed in 3.1.4

How to fix

Upgrade to a fixed version: AcademySoftwareFoundation openexr 3.1.4. Check the vendor advisory for mitigations.

References

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=41416
https://github.com/AcademySoftwareFoundation/openexr/blob/v3.1.4/CHANGES.md#version-314-january-26-2022
https://github.com/AcademySoftwareFoundation/openexr/commit/11cad77da87c4fa2aab7d58dd5339e254db7937e
https://github.com/AcademySoftwareFoundation/openexr/commit/db217f29dfb24f6b4b5100c24ac5e7490e1c57d0
https://github.com/AcademySoftwareFoundation/openexr/pull/1209
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.1.4
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/openexr/OSV-2021-1627.yaml
https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6TEZDE2S2DB4BF4LZSSV4W3DNW7DSRHJ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJ5PW4WNXBKCRFGDZGAQOSVH2BKZKL4X/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XJUK7WIQV5EKWTCZBRXFN6INHG6MLS5O/
https://security.gentoo.org/glsa/202210-31

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