# CVE-2021-46312: djview3: An issue was discovered IW44EncodeCodec.cpp in djvulibre 3.5.28 in allows attackers to cause a denial of service via...

CVE-2021-46312 is fixed in 8 products on 1 platform, first by djview 3.5.28-2ubuntu0.22.04.2, released August 22, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-46312
- Priority: Routine
- CVSS: 6.5 (Low)
- EPSS: 0.0104
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 22, 2023

## Description

An issue was discovered IW44EncodeCodec.cpp in djvulibre 3.5.28 in allows attackers to cause a denial of service via divide by zero.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | djview Ubuntu 18.04.6 LTS (bionic) | 3.5.27.1-8ubuntu0.4+esm1 | [djview 3.5.27.1-8ubuntu0.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-djview-3.5.27.1-8ubuntu0.4-esm1.md) | Jul 3, 2025 |
| Linux | djview Ubuntu 20.04 LTS (focal) | 3.5.27.1-14ubuntu0.1+esm1 | [djview 3.5.27.1-14ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-djview-3.5.27.1-14ubuntu0.1-esm1.md) | Jul 3, 2025 |
| Linux | djview Ubuntu 22.04.1 LTS (jammy) | 3.5.28-2ubuntu0.22.04.2 | [djview 3.5.28-2ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-djview-3.5.28-2ubuntu0.22.04.2.md) | Aug 22, 2023 |
| Linux | djview Ubuntu 24.04.5 LTS (noble) | 3.5.28-2ubuntu0.24.04.2 | [djview 3.5.28-2ubuntu0.24.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-djview-3.5.28-2ubuntu0.24.04.2.md) | Aug 22, 2023 |
| Linux | djview3 Ubuntu 18.04.6 LTS (bionic) | 3.5.27.1-8ubuntu0.4+esm1 | [djview3 3.5.27.1-8ubuntu0.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-djview3-3.5.27.1-8ubuntu0.4-esm1.md) | Jul 3, 2025 |
| Linux | djview3 Ubuntu 20.04 LTS (focal) | 3.5.27.1-14ubuntu0.1+esm1 | [djview3 3.5.27.1-14ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-djview3-3.5.27.1-14ubuntu0.1-esm1.md) | Jul 3, 2025 |
| Linux | djview3 Ubuntu 22.04.1 LTS (jammy) | 3.5.28-2ubuntu0.22.04.2 | [djview3 3.5.28-2ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-djview3-3.5.28-2ubuntu0.22.04.2.md) | Aug 22, 2023 |
| Linux | djview3 Ubuntu 24.04.5 LTS (noble) | 3.5.28-2ubuntu0.24.04.2 | [djview3 3.5.28-2ubuntu0.24.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-djview3-3.5.28-2ubuntu0.24.04.2.md) | Aug 22, 2023 |
| Linux | djvulibre Debian 12.15 (bookworm) | 3.5.28-2.2~deb12u1 | [DEBIAN-CVE-2021-46312](https://patchblox.com/security/data/fix/linux/debian-cve-2021-46312.md) | Aug 22, 2023 |
| Linux | djvulibre Debian 13.5 (trixie) | 3.5.28-2.2 | [DEBIAN-CVE-2021-46312](https://patchblox.com/security/data/fix/linux/debian-cve-2021-46312.md) | Aug 22, 2023 |
| Linux | djvulibre Debian 14 | 3.5.28-2.2 | [DEBIAN-CVE-2021-46312](https://patchblox.com/security/data/fix/linux/debian-cve-2021-46312.md) | Aug 22, 2023 |
| Linux | djvulibre-bin Ubuntu 18.04.6 LTS (bionic) | 3.5.27.1-8ubuntu0.4+esm1 | [djvulibre-bin 3.5.27.1-8ubuntu0.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-djvulibre-bin-3.5.27.1-8ubuntu0.4-esm1.md) | Jul 3, 2025 |
| Linux | djvulibre-bin Ubuntu 20.04 LTS (focal) | 3.5.27.1-14ubuntu0.1+esm1 | [djvulibre-bin 3.5.27.1-14ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-djvulibre-bin-3.5.27.1-14ubuntu0.1-esm1.md) | Jul 3, 2025 |
| Linux | djvulibre-bin Ubuntu 22.04.1 LTS (jammy) | 3.5.28-2ubuntu0.22.04.2 | [djvulibre-bin 3.5.28-2ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-djvulibre-bin-3.5.28-2ubuntu0.22.04.2.md) | Aug 22, 2023 |
| Linux | djvulibre-bin Ubuntu 24.04.5 LTS (noble) | 3.5.28-2ubuntu0.24.04.2 | [djvulibre-bin 3.5.28-2ubuntu0.24.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-djvulibre-bin-3.5.28-2ubuntu0.24.04.2.md) | Aug 22, 2023 |
| Linux | djvulibre-desktop Ubuntu 18.04.6 LTS (bionic) | 3.5.27.1-8ubuntu0.4+esm1 | [djvulibre-desktop 3.5.27.1-8ubuntu0.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-djvulibre-desktop-3.5.27.1-8ubuntu0.4-esm1.md) | Jul 3, 2025 |
| Linux | djvulibre-desktop Ubuntu 20.04 LTS (focal) | 3.5.27.1-14ubuntu0.1+esm1 | [djvulibre-desktop 3.5.27.1-14ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-djvulibre-desktop-3.5.27.1-14ubuntu0.1-esm1.md) | Jul 3, 2025 |
| Linux | djvulibre-desktop Ubuntu 22.04.1 LTS (jammy) | 3.5.28-2ubuntu0.22.04.2 | [djvulibre-desktop 3.5.28-2ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-djvulibre-desktop-3.5.28-2ubuntu0.22.04.2.md) | Aug 22, 2023 |
| Linux | djvulibre-desktop Ubuntu 24.04.5 LTS (noble) | 3.5.28-2ubuntu0.24.04.2 | [djvulibre-desktop 3.5.28-2ubuntu0.24.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-djvulibre-desktop-3.5.28-2ubuntu0.24.04.2.md) | Aug 22, 2023 |
| Linux | djvuserve Ubuntu 18.04.6 LTS (bionic) | 3.5.27.1-8ubuntu0.4+esm1 | [djvuserve 3.5.27.1-8ubuntu0.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-djvuserve-3.5.27.1-8ubuntu0.4-esm1.md) | Jul 3, 2025 |
| Linux | djvuserve Ubuntu 20.04 LTS (focal) | 3.5.27.1-14ubuntu0.1+esm1 | [djvuserve 3.5.27.1-14ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-djvuserve-3.5.27.1-14ubuntu0.1-esm1.md) | Jul 3, 2025 |
| Linux | djvuserve Ubuntu 22.04.1 LTS (jammy) | 3.5.28-2ubuntu0.22.04.2 | [djvuserve 3.5.28-2ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-djvuserve-3.5.28-2ubuntu0.22.04.2.md) | Aug 22, 2023 |
| Linux | djvuserve Ubuntu 24.04.5 LTS (noble) | 3.5.28-2ubuntu0.24.04.2 | [djvuserve 3.5.28-2ubuntu0.24.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-djvuserve-3.5.28-2ubuntu0.24.04.2.md) | Aug 22, 2023 |
| Linux | libdjvulibre-text Ubuntu 18.04.6 LTS (bionic) | 3.5.27.1-8ubuntu0.4+esm1 | [libdjvulibre-text 3.5.27.1-8ubuntu0.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libdjvulibre-text-3.5.27.1-8ubuntu0.4-esm1.md) | Jul 3, 2025 |
| Linux | libdjvulibre-text Ubuntu 20.04 LTS (focal) | 3.5.27.1-14ubuntu0.1+esm1 | [libdjvulibre-text 3.5.27.1-14ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libdjvulibre-text-3.5.27.1-14ubuntu0.1-esm1.md) | Jul 3, 2025 |
| Linux | libdjvulibre-text Ubuntu 22.04.1 LTS (jammy) | 3.5.28-2ubuntu0.22.04.2 | [libdjvulibre-text 3.5.28-2ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libdjvulibre-text-3.5.28-2ubuntu0.22.04.2.md) | Aug 22, 2023 |
| Linux | libdjvulibre-text Ubuntu 24.04.5 LTS (noble) | 3.5.28-2ubuntu0.24.04.2 | [libdjvulibre-text 3.5.28-2ubuntu0.24.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libdjvulibre-text-3.5.28-2ubuntu0.24.04.2.md) | Aug 22, 2023 |
| Linux | libdjvulibre21 Ubuntu 18.04.6 LTS (bionic) | 3.5.27.1-8ubuntu0.4+esm1 | [libdjvulibre21 3.5.27.1-8ubuntu0.4+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libdjvulibre21-3.5.27.1-8ubuntu0.4-esm1.md) | Jul 3, 2025 |
| Linux | libdjvulibre21 Ubuntu 20.04 LTS (focal) | 3.5.27.1-14ubuntu0.1+esm1 | [libdjvulibre21 3.5.27.1-14ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libdjvulibre21-3.5.27.1-14ubuntu0.1-esm1.md) | Jul 3, 2025 |
| Linux | libdjvulibre21 Ubuntu 22.04.1 LTS (jammy) | 3.5.28-2ubuntu0.22.04.2 | [libdjvulibre21 3.5.28-2ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libdjvulibre21-3.5.28-2ubuntu0.22.04.2.md) | Aug 22, 2023 |
| Linux | libdjvulibre21 Ubuntu 24.04.5 LTS (noble) | 3.5.28-2ubuntu0.24.04.2 | [libdjvulibre21 3.5.28-2ubuntu0.24.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libdjvulibre21-3.5.28-2ubuntu0.24.04.2.md) | Aug 22, 2023 |

---

Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.