Medium [CVE-2026-59198] Information disclosure via TGA RLE encoder out-of-bounds read
This medium-severity Red Hat Linux advisory covers CVE-2026-59198 affecting Lightspeed Core, OpenShift Lightspeed, Red Hat AI Inference Server.
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Summary
Pillow is a Python imaging library. From 5.2.0 until 12.3.0, Pillow's TGA RLE encoder reads past its packed row buffer when saving a mode 1 image with TGA RLE compression, allowing adjacent process heap bytes to be copied into the generated TGA file.
This issue is fixed in version 12.3.0. This out-of-bounds read allows adjacent process heap memory to be copied into the generated TGA file, potentially leading to information disclosure.
Exploitation requires the application to save attacker-influenced images in TGA format with RLE compression, which is an uncommon operation in affected Red Hat products. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L).
Weakness: CWE-125. Affected Red Hat products: Lightspeed Core; OpenShift Lightspeed; Red Hat AI Inference Server; Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI); Red Hat Quay 3.
Under investigation: Exploit Intelligence; Red Hat Ansible Automation Platform 2; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Satellite 6. Red Hat does not currently list a fixing RHSA for this CVE.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 5 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 5 days ago·verify at source
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