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CVE-2021-3941

In ImfChromaticities.cpp routine RGBtoXYZ(), there are some division operations such as `float Z ...

6.5 MediumFix available

In ImfChromaticities.cpp routine RGBtoXYZ(), there are some division operations such as float Z = (1 - chroma.white.x - chroma.white.y) * Y / chroma.white.y; and chroma.green.y * (X + Z))) / d; but the divisor is not checked for a 0 value. A specially crafted file could trigger a divide-by-zero condition which could affect the availability of programs linked with OpenEXR.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.30%Down 0.6 points since Mar 26, 2022
90%50%10%1%

What each source reports

NVD Score used 6.5

In ImfChromaticities.cpp routine RGBtoXYZ(), there are some division operations such as float Z = (1 - chroma.white.x - chroma.white.y) * Y / chroma.white.y; and chroma.green.y * (X + Z))) / d; but the divisor is not checked for a 0 value. A specially crafted file could trigger a divide-by-zero condition which could affect the availability of programs linked with OpenEXR.

Record
CVE-2021-3941
CVSS 3.1
6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CVSS 2.0
2.1 LowAV:L/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-369
Updated
2026-11-02
CVE List No score

In ImfChromaticities.cpp routine RGBtoXYZ(), there are some division operations such as float Z = (1 - chroma.white.x - chroma.white.y) * Y / chroma.white.y; and chroma.green.y * (X + Z))) / d; but the divisor is not checked for a 0 value. A specially crafted file could trigger a divide-by-zero condition which could affect the availability of programs linked with OpenEXR.

Record
CVE-2021-3941
Weakness
CWE-369
Updated
2026-11-02
EUVDEUVD-2021-27154 No score

In ImfChromaticities.cpp routine RGBtoXYZ(), there are some division operations such as float Z = (1 - chroma.white.x - chroma.white.y) * Y / chroma.white.y; and chroma.green.y * (X + Z))) / d; but the divisor is not checked for a 0 value. A specially crafted file could trigger a divide-by-zero condition which could affect the availability of programs linked with OpenEXR.

Record
EUVD-2021-27154
Updated
2026-11-03
GitHub AdvisoriesGHSA-rpq9-h75r-mccg 6.5

In ImfChromaticities.cpp routine RGBtoXYZ(), there are some division operations such as `float Z ...

In ImfChromaticities.cpp routine RGBtoXYZ(), there are some division operations such as float Z = (1 - chroma.white.x - chroma.white.y) * Y / chroma.white.y; and chroma.green.y * (X + Z))) / d; but the divisor is not checked for a 0 value. A specially crafted file could trigger a divide-by-zero condition which could affect the availability of programs linked with OpenEXR.

Record
GHSA-rpq9-h75r-mccg
CVSS 3.1
6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Weakness
CWE-369
Updated
2026-11-02
OSV 6.5

In ImfChromaticities.cpp routine RGBtoXYZ(), there are some division operations such as float Z = (1 - chroma.white.x - chroma.white.y) * Y / chroma.white.y; and chroma.green.y * (X + Z))) / d; but the divisor is not checked for a 0 value. A specially crafted file could trigger a divide-by-zero condition which could affect the availability of programs linked with OpenEXR.

Record
CVE-2021-3941
CVSS 3.1
6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2021-3941 6.5

In ImfChromaticities.cpp routine RGBtoXYZ(), there are some division operations such as float Z = (1 - chroma.white.x - chroma.white.y) * Y / chroma.white.y; and chroma.green.y * (X + Z))) / d; but the divisor is not checked for a 0 value. A specially crafted file could trigger a divide-by-zero condition which could affect the availability of programs linked with OpenEXR.

Record
DEBIAN-CVE-2021-3941
CVSS 3.1
6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Updated
2026-11-02
Show 11 moreShow less
OSVJLSEC-2026-131 6.5

In ImfChromaticities.cpp routine RGBtoXYZ(), there are some division operations such as float Z = (1 - chroma.white.x - chroma.white.y) * Y / chroma.white.y; and chroma.green.y * (X + Z))) / d; but the divisor is not checked for a 0 value. A specially crafted file could trigger a divide-by-zero condition which could affect the availability of programs linked with OpenEXR.

Record
JLSEC-2026-131
CVSS 3.1
6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CVSS 2.0
2.1 LowAV:L/AC:L/Au:N/C:N/I:N/A:P
Updated
2026-11-02
OSVOESA-2025-2355 6.5

OpenEXR security update

OpenEXR is a high dynamic-range (HDR) image file format originally developed by Industrial Light & Magic for use in computer imaging applications.

Security Fix(es):

In ImfChromaticities.cpp routine RGBtoXYZ(), there are some division operations such as float Z = (1 - chroma.white.x - chroma.white.y) * Y / chroma.white.y; and chroma.green.y * (X + Z))) / d; but the divisor is not checked for a 0 value. A specially crafted file could trigger a divide-by-zero condition which could affect the availability of programs linked with OpenEXR.(CVE-2021-3941)

Record
OESA-2025-2355
CVSS 3.1
6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2021-3941 6.5

In ImfChromaticities.cpp routine RGBtoXYZ(), there are some division operations such as float Z = (1 - chroma.white.x - chroma.white.y) * Y / chroma.white.y; and chroma.green.y * (X + Z))) / d; but the divisor is not checked for a 0 value. A specially crafted file could trigger a divide-by-zero condition which could affect the availability of programs linked with OpenEXR.

Record
UBUNTU-CVE-2021-3941
CVSS 3.1
6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Updated
2026-11-02
OSVMGASA-2021-0524 No score

Updated openexr packages fix security vulnerability

Integer-overflow in Imf_3_1::bytesPerDeepLineTable. (CVE-2021-3933) Divide-by-zero in Imf_3_1::RGBtoXYZ. (CVE-2021-3941)

Record
MGASA-2021-0524
Updated
2026-11-02
OSVopenSUSE-SU-2021:1537-1 No score

Security update for openexr

This update for openexr fixes the following issues:

  • CVE-2021-3941: Fixed divide-by-zero in Imf_3_1:RGBtoXYZ (bsc#1192556).
  • CVE-2021-3933: Fixed integer-overflow in Imf_3_1:bytesPerDeepLineTable (bsc#1192498).

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2021:1537-1
Updated
2026-11-02
OSVopenSUSE-SU-2021:3844-1 No score

Security update for openexr

This update for openexr fixes the following issues:

  • CVE-2021-3941: Fixed divide-by-zero in Imf_3_1:RGBtoXYZ (bsc#1192556).
  • CVE-2021-3933: Fixed integer-overflow in Imf_3_1:bytesPerDeepLineTable (bsc#1192498).
Record
openSUSE-SU-2021:3844-1
Updated
2026-11-02
OSVSUSE-SU-2021:14846-1 No score

Security update for OpenEXR

This update for OpenEXR fixes the following issues:

  • CVE-2021-20298: Fixed out-of-memory in B44Compressor (bsc#1188460).
  • CVE-2021-20300: Fixed integer-overflow in Imf_2_5:hufUncompress (bsc#1188458).
  • CVE-2021-20303: Fixed heap-buffer-overflow in Imf_2_5::copyIntoFrameBuffe (bsc#1188457).
  • CVE-2021-20304: Fixed undefined-shift in Imf_2_5:hufDecode (bsc#1188461).
  • CVE-2021-3941: Fixed divide-by-zero in Imf_3_1:RGBtoXYZ (bsc#1192556).
Record
SUSE-SU-2021:14846-1
Updated
2026-11-02
OSVSUSE-SU-2021:3843-1 No score

Security update for openexr

This update for openexr fixes the following issues:

  • CVE-2021-3477: Fixed Heap-buffer-overflow in Imf_2_5::DeepTiledInputFile::readPixelSampleCounts (bsc#1184353).
  • CVE-2021-3941: Fixed divide-by-zero in Imf_3_1:RGBtoXYZ (bsc#1192556).
  • CVE-2021-3933: Fixed integer-overflow in Imf_3_1:bytesPerDeepLineTable (bsc#1192498).
Record
SUSE-SU-2021:3843-1
Updated
2026-11-02
OSVSUSE-SU-2021:3844-1 No score

Security update for openexr

This update for openexr fixes the following issues:

  • CVE-2021-3941: Fixed divide-by-zero in Imf_3_1:RGBtoXYZ (bsc#1192556).
  • CVE-2021-3933: Fixed integer-overflow in Imf_3_1:bytesPerDeepLineTable (bsc#1192498).
Record
SUSE-SU-2021:3844-1
Updated
2026-11-02
OSVUSN-5150-1 No score

openexr vulnerability

It was discovered that OpenEXR incorrectly handled certain EXR image files. An attacker could possibly use this issue to cause a crash.

Record
USN-5150-1
Updated
2026-11-02
OSVUSN-5620-1 No score

openexr vulnerabilities

It was discovered that OpenEXR incorrectly handled certain malformed EXR image files. If a user were tricked into opening a crafted EXR image file, a remote attacker could cause a denial of service, or possibly execute arbitrary code. These issues only affected Ubuntu 20.04 ESM. (CVE-2021-3598, CVE-2021-3605, CVE-2021-20296, CVE-2021-23215, CVE-2021-26260)

It was discovered that OpenEXR incorrectly handled certain EXR image files. An attacker could possibly use this issue to cause a crash or execute arbitrary code. (CVE-2021-3933)

It was discovered that OpenEXR incorrectly handled certain EXR image files. An attacker could possibly use this issue to cause a crash. (CVE-2021-3941)

Record
USN-5620-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openexr
Debian:12
 before 3.1.5-2
3.1.5-2
openexr
Debian:13
 before 3.1.5-2
3.1.5-2
openexr
Debian:14
 before 3.1.5-2
3.1.5-2
openexr
Debian:10
From an advisory covering 22 CVEs
 before 2.2.1-4.1+deb10u2, plus listed versions
2.2.1-4.12.2.1-4.1+deb10u1
2.2.1-4.1+deb10u2
openexr
Debian:11
From an advisory covering 7 CVEs
 before 2.5.4-2+deb11u1, plus listed versions
2.5.4-2
2.5.4-2+deb11u1
OpenEXR_jll
Julia
 3.1.4+0 up to 3.2.4+0
3.2.4+0
openexr
Mageia:8
From an advisory covering 2 CVEs
 before 2.5.7-1.2.mga8
2.5.7-1.2.mga8
OpenEXR
openEuler:20.03-LTS-SP4
 before 2.2.0-31.oe2003sp4
2.2.0-31.oe2003sp4
OpenEXR
SUSE:Linux Enterprise Point of Sale 11 SP3
From an advisory covering 5 CVEs
 before 1.6.1-83.17.30.1
1.6.1-83.17.30.1
OpenEXR
SUSE:Linux Enterprise Server 11 SP4-LTSS
From an advisory covering 5 CVEs
 before 1.6.1-83.17.30.1
1.6.1-83.17.30.1
Show 14 moreShow less
Affected packages
PackageAffectedFixed
openexr
SUSE:Linux Enterprise Software Development Kit 12 SP5
From an advisory covering 3 CVEs
 before 2.1.0-6.42.1
2.1.0-6.42.1
openexr
SUSE:Linux Enterprise Server 12 SP5
From an advisory covering 3 CVEs
 before 2.1.0-6.42.1
2.1.0-6.42.1
openexr
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
From an advisory covering 3 CVEs
 before 2.1.0-6.42.1
2.1.0-6.42.1
openexr
SUSE:Linux Enterprise Workstation Extension 12 SP5
From an advisory covering 3 CVEs
 before 2.1.0-6.42.1
2.1.0-6.42.1
openexr
SUSE:Linux Enterprise Module for Desktop Applications 15 SP2
From an advisory covering 2 CVEs
 before 2.2.1-3.38.1
2.2.1-3.38.1
openexr
SUSE:Linux Enterprise Module for Desktop Applications 15 SP3
From an advisory covering 2 CVEs
 before 2.2.1-3.38.1
2.2.1-3.38.1
openexr
Ubuntu:Pro:16.04:LTS
 before 2.2.0-10ubuntu2.6+esm3, plus listed versions
2.2.0-1ubuntu32.2.0-7ubuntu12.2.0-9ubuntu12.2.0-10ubuntu22.2.0-10ubuntu2.1
Show 6 moreShow less
2.2.0-10ubuntu2.22.2.0-10ubuntu2.32.2.0-10ubuntu2.42.2.0-10ubuntu2.62.2.0-10ubuntu2.6+esm12.2.0-10ubuntu2.6+esm2
2.2.0-10ubuntu2.6+esm3
openexr
Ubuntu:18.04:LTS
 before 2.2.0-11.1ubuntu1.9, plus listed versions
2.2.0-11ubuntu12.2.0-11.1ubuntu12.2.0-11.1ubuntu1.12.2.0-11.1ubuntu1.22.2.0-11.1ubuntu1.3
Show 4 moreShow less
2.2.0-11.1ubuntu1.42.2.0-11.1ubuntu1.62.2.0-11.1ubuntu1.72.2.0-11.1ubuntu1.8
2.2.0-11.1ubuntu1.9
openexr
Ubuntu:Pro:20.04:LTS
 before 2.3.0-6ubuntu0.5+esm1, plus listed versions
2.2.1-4.1ubuntu12.3.0-62.3.0-6build12.3.0-6ubuntu0.12.3.0-6ubuntu0.22.3.0-6ubuntu0.32.3.0-6ubuntu0.5
2.3.0-6ubuntu0.5+esm1
openexr
Ubuntu:Pro:22.04:LTS
 before 2.5.7-1ubuntu0.1~esm1, plus listed versions
2.5.4-22.5.7-1
2.5.7-1ubuntu0.1~esm1
openexr
Ubuntu:Pro:20.04:LTS
From an advisory covering 7 CVEs
 before 2.3.0-6ubuntu0.5+esm1, plus listed versions
2.2.1-4.1ubuntu12.3.0-62.3.0-6build12.3.0-6ubuntu0.12.3.0-6ubuntu0.22.3.0-6ubuntu0.32.3.0-6ubuntu0.5
2.3.0-6ubuntu0.5+esm1
openexr
Ubuntu:Pro:22.04:LTS
From an advisory covering 7 CVEs
 before 2.5.7-1ubuntu0.1~esm1, plus listed versions
2.5.4-22.5.7-1
2.5.7-1ubuntu0.1~esm1
openexr
openSUSE:Leap 15.2
From an advisory covering 2 CVEs
 before 2.2.1-lp152.7.23.1
2.2.1-lp152.7.23.1
openexr
openSUSE:Leap 15.3
From an advisory covering 2 CVEs
 before 2.2.1-3.38.1
2.2.1-3.38.1

History

History
RecordedChangedSources
affected, facts
aliases, productsEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-3941 is a medium vulnerability (CVSS 6.5) in Academysoftwarefoundation Openexr, published November 11, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 23rd percentile. Fixed in openexr 3.1.5-2.

References

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