High [CVE-2026-59197] Native heap out-of-bounds write
This high-severity Red Hat Linux advisory covers CVE-2026-59197 affecting Red Hat Ansible Automation Platform 2.5 for RHEL 8, Red Hat Ansible Automation Platform 2.5 for RHEL 9, Red Hat Ansible Automation Platform 2.6 for RHEL 9.
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Summary
Pillow is a Python imaging library. Prior to 12.3.0, Pillow's public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter.
RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and ImagingExpand() computes output dimensions with unchecked signed int arithmetic. This issue is fixed in version 12.3.0.
This can lead to denial of service and limited integrity impact via heap corruption. A remote attacker who can drive RankFilter with attacker-controlled sizes may crash the process or corrupt heap memory.
Red Hat severity: Important — CVSS 8.2 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H). Weakness: CWE-787.
Affected products named by the advisory: Red Hat Ansible Automation Platform 2.5 for RHEL 8; Red Hat Ansible Automation Platform 2.5 for RHEL 9; Red Hat Ansible Automation Platform 2.6 for RHEL 9; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 19 more.
Affected products named by the advisory: Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.8 Telecommunications Update Service; and 15 more.
- < 12.3.0
Official advisory · high-confidence parse· fetched 6 days ago·verify at source
- 12.3.0
- python3.12-pillow-0:12.3.0-1.el8ap
- python3.12-pillow-0:12.3.0-1.el9ap
- python-pillow-0:5.1.1-23.el8_10
- python-pillow-0:5.1.1-15.el8_4.2
- python-pillow-0:5.1.1-20.el8_6.1
- python-pillow-0:5.1.1-20.el8_8.1
- python-pillow-0:12.3.0-1.el8pc
- python-pillow-0:12.3.0-1.el9pc
- ansible-automation-platform-26/hub-rhel9:1785753568
- ansible-automation-platform-26/lightspeed-chatbot-rhel9:1785646188
- ansible-automation-platform-27/hub-rhel9:1785376164
- ansible-automation-platform-27/lightspeed-chatbot-rhel9:1785426734
- rhoai/odh-automl-rhel9:1786612415
- rhoai/odh-autorag-rhel9:1786612637
- rhoai/odh-llm-d-kv-cache-rhel9:1787169432
- rhoai/odh-mlflow-rhel9:1787226790
- rhoai/odh-openvino-model-server-rhel9:1787303251
- rhoai/odh-pipeline-runtime-datascience-cpu-py312-rhel9:1787073866
- rhoai/odh-pipeline-runtime-pytorch-cuda-py312-rhel9:1787073873
- rhoai/odh-pipeline-runtime-pytorch-llmcompressor-cuda-py312-rhel9:1787073459
- rhoai/odh-pipeline-runtime-pytorch-rocm-py312-rhel9:1787073611
- rhoai/odh-pipeline-runtime-tensorflow-cuda-py312-rhel9:1787073451
- rhoai/odh-pipeline-runtime-tensorflow-rocm-py312-rhel9:1787073451
- rhoai/odh-th06-cpu-torch210-py312-rhel9:1787076778
- rhoai/odh-th06-cuda130-torch210-py312-rhel9:1787077779
- rhoai/odh-th06-rocm64-torch291-py312-rhel9:1787076481
- rhoai/odh-training-cuda128-torch29-py312-rhel9:1786611803
- rhoai/odh-training-rocm64-torch29-py312-rhel9:1786611435
- rhoai/odh-trustyai-garak-lls-provider-dsp-rhel9:1786613209
- rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9:1787121387
- rhoai/odh-workbench-jupyter-datascience-cpu-py312-rhel9:1787074331
- rhoai/odh-workbench-jupyter-pytorch-cuda-py312-rhel9:1787073605
- rhoai/odh-workbench-jupyter-pytorch-rocm-py312-rhel9:1787073546
- rhoai/odh-workbench-jupyter-tensorflow-cuda-py312-rhel9:1787073717
- rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9:1787073713
- rhoai/odh-workbench-jupyter-trustyai-cpu-py312-rhel9:1787073593
- quay/quay-rhel8:1786395065
- quay/quay-rhel8:1786170635
- quay/quay-rhel8:1785261506
- quay/quay-rhel8:1785950004
- RHSA-2026:50319
- RHSA-2026:50336
- RHSA-2026:48021
- RHSA-2026:52551
- RHSA-2026:54528
- RHSA-2026:54417
- RHSA-2026:50223
- RHSA-2026:50479
- RHSA-2026:50340
Official advisory · high-confidence parse· fetched 6 days ago·verify at source
Mitigation
Upgrade to a fixed release: 12.3.0, python3.12-pillow-0:12.3.0-1.el8ap, python3.12-pillow-0:12.3.0-1.el9ap, python-pillow-0:5.1.1-23.el8_10, python-pillow-0:5.1.1-15.el8_4.2, python-pillow-0:5.1.1-20.el8_6.1. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 6 days ago·verify at source
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