CVE-2026-39919
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
Ghostscript before 10.08.0 contains a heap-based buffer overflow vulnerability in the JPEG 2000 output adapter (base/sjpx_openjpeg.c) that allows attackers to cause memory corruption by supplying a crafted PDF containing a JPEG 2000 image with mismatched component subsampling factors. When image components declare different subsampling values, the non-samescale sub-byte-depth output path allocates a row buffer sized for packed output but writes a full byte per output column regardless of bit depth, overflowing the allocation and corrupting internal chunk-allocator metadata to achieve code execution.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Artifex Software | Ghostscript | 0 < 10.08.0 | affected |
Weaknesses
- CWE-122: Heap-based Buffer Overflow
References
- https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/tag/gs10080
- https://github.com/ArtifexSoftware/ghostpdl/commit/0a8bf88e39db07b0751a58d6ec1cf992073e4dc1
- https://bugs.ghostscript.com/show_bug.cgi?id=709666
- https://www.vulncheck.com/advisories/ghostscript-heap-buffer-overflow-via-jpeg-2000-output-adapter
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