# CVE-2021-36409: libde265: There is an Assertion `scaling_list_pred_matrix_id_delta==1' failed at sps.cc:925 in libde265 v1.0.8 when decoding fi...

CVE-2021-36409 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2021-36409, released January 10, 2022. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-36409
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0097
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 10, 2022

## Description

There is an Assertion `scaling_list_pred_matrix_id_delta==1' failed at sps.cc:925 in libde265 v1.0.8 when decoding file, which allows attackers to cause a Denial of Service (DoS) by running the application with a crafted file or possibly have unspecified other impact.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libde265 Debian 12.15 (bookworm) | 1.0.8-1.1 | [DEBIAN-CVE-2021-36409](https://patchblox.com/security/data/fix/linux/debian-cve-2021-36409.md) | Jan 10, 2022 |
| Linux | libde265 Debian 13.5 (trixie) | 1.0.8-1.1 | [DEBIAN-CVE-2021-36409](https://patchblox.com/security/data/fix/linux/debian-cve-2021-36409.md) | Jan 10, 2022 |
| Linux | libde265 Debian 14 | 1.0.8-1.1 | [DEBIAN-CVE-2021-36409](https://patchblox.com/security/data/fix/linux/debian-cve-2021-36409.md) | Jan 10, 2022 |
| Linux | libde265-0 Ubuntu 18.04.6 LTS (bionic) | 1.0.2-2ubuntu0.18.04.1~esm2 | [libde265-0 1.0.2-2ubuntu0.18.04.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libde265-0-1.0.2-2ubuntu0.18.04.1-esm2.md) | Nov 2, 2022 |
| Linux | libde265-0 Ubuntu 20.04 LTS (focal) | 1.0.4-1ubuntu0.2 | [libde265-0 1.0.4-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libde265-0-1.0.4-1ubuntu0.2.md) | Nov 2, 2022 |
| Linux | libde265-0 Ubuntu 22.04.1 LTS (jammy) | 1.0.8-1ubuntu0.1 | [libde265-0 1.0.8-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libde265-0-1.0.8-1ubuntu0.1.md) | Nov 2, 2022 |
| Linux | libde265-examples Ubuntu 18.04.6 LTS (bionic) | 1.0.2-2ubuntu0.18.04.1~esm2 | [libde265-examples 1.0.2-2ubuntu0.18.04.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libde265-examples-1.0.2-2ubuntu0.18.04.1-esm2.md) | Nov 2, 2022 |
| Linux | libde265-examples Ubuntu 20.04 LTS (focal) | 1.0.4-1ubuntu0.2 | [libde265-examples 1.0.4-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libde265-examples-1.0.4-1ubuntu0.2.md) | Nov 2, 2022 |
| Linux | libde265-examples Ubuntu 22.04.1 LTS (jammy) | 1.0.8-1ubuntu0.1 | [libde265-examples 1.0.8-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libde265-examples-1.0.8-1ubuntu0.1.md) | Nov 2, 2022 |

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Data as of 2026-11-08T06:59:42Z 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

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