Source: cimg Version: 3.5.2+dfsg-1 Severity: important Tags: security upstream Forwarded: https://github.com/GreycLab/CImg/issues/480 X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>
Hi, The following vulnerability was published for cimg. CVE-2026-47667[0]: | CImg Library is a C++ library for image processing. Prior to version | 4.0.0 in `_load_analyze()`, the header_size field is read as an | `unsigned int` from the first 4 bytes of an Analyze/NIfTI file and | passed directly to `new unsigned char[header_size]` without being | bounded against the actual file size. A value up to ~4 GB is | accepted. If the subsequent `fread` returns `short` as it will for | any malformed file), the function throws a `CImgIOException` and the | allocated buffer is never freed. A 6-byte crafted file is sufficient | to trigger an allocation of ~1.3 GB per call, with the full | allocation leaked on every error path. The issue is reachable via | `load_analyze()` and the generic `load()` when the file extension is | .hdr, .img, or .nii. Version 4.0.0 fixes the issue. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2026-47667 https://www.cve.org/CVERecord?id=CVE-2026-47667 [1] https://github.com/GreycLab/CImg/issues/480 [2] https://github.com/GreycLab/CImg/security/advisories/GHSA-rmfc-grgj-qwhv [4] https://github.com/GreycLab/CImg/commit/6a69bf725ffd111a4c7dc61cc15e3661abd158ee Please adjust the affected versions in the BTS as needed. Regards, Salvatore
