CVE-2026-96638Pillow: BMP RLE decoder memory-amplification DoS via unbounded delta escape / absolute mode

Açıklama

Pillow is a Python imaging library. From 9.1.0 until 13.0.0, BmpRleDecoder.decode() in src/PIL/BmpImagePlugin.py permits crafted RLE BMP delta escapes and absolute-mode runs to append beyond the remaining dest_length without a per-branch cap. A delta can add roughly 255 image rows in one iteration, so a kilobyte-sized file with a large but permitted width can expand the data bytearray to hundreds of megabytes or more, causing memory-exhaustion denial of service. This issue is fixed in version 13.0.0.

Veri: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Bilgiler kaynaktaki haliyle, İngilizce yayımlanır.

Etkilenen ürünler ve sürümler

Ubuntu düzeltmeleri

• USN-9064-1 Pillow vulnerabilities Ubuntu 26.10, 26.04, 24.04, 22.04, 20.04, 18.04, 16.04, 14.04 · 12.11.2026 · pillow

Kaynaklar ve yamalar

• https://github.com/python-pillow/Pillow/security/advisories/GHSA-24rc-8hj2-v98c Vendor Advisory
• https://github.com/python-pillow/Pillow/pull/10015 Issue Tracking
• https://github.com/python-pillow/Pillow/commit/e7794835e323ff2691d9b3a974cade1a44301b9a Patch
• https://github.com/python-pillow/Pillow/releases/tag/13.0.0 Release Notes