CVE-2026-34588

描述

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.1.0 to before 3.2.7, 3.3.9, and 3.4.9, internal_exr_undo_piz() advances the working wavelet pointer with signed 32-bit arithmetic. Because nx, ny, and wcount are int, a crafted EXR file can make this product overflow and wrap. The next channel then decodes from an incorrect address. The wavelet decode path operates in place, so this yields both out-of-bounds reads and out-of-bounds writes. This vulnerability is fixed in 3.2.7, 3.3.9, and 3.4.9.

如何修補 CVE-2026-34588

要修補 CVE-2026-34588,請將受影響套件升級到下列已修補版本。

• —升級至 3.2.7 或更新版本
• —升級至 3.2.7 或更新版本

CVE-2026-34588 正在被利用嗎?

低 — EPSS 為 0.5%,目前沒有觀察到大規模利用活動。

受影響套件(2)

• >= 3.1.0, < 3.2.7
• >= 3.1.0, < 3.2.7, >= 3.3.0, < 3.3.9, >= 3.4.0, < 3.4.9

CVSS 分數

參考連結(8)

• ADVISORYgithub.com/advisories/GHSA-588r-cr5c-w6hf
• ADVISORYnvd.nist.gov/vuln/detail/CVE-2026-34588
• PATCHgithub.com/AcademySoftwareFoundation/openexr
• PATCHpypi.org/project/openexr
• WEB