tiff: A flaw was found in libtiff
CVE-2026-18495 is fixed in tiff on 1 platform, first by DEBIAN-CVE-2026-18495, released September 12, 2026. It is not reported as exploited. Patch Radar priority: Routine.
A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the `tiff2pdf` utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit `StripByteCounts` value to be truncated to a 32-bit integer. This leads to an undersized memory allocation and a subsequent out-of-bounds memory copy, resulting in a crash and severe memory corruption.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| tiff · Debian 14 | 4.7.1-1 | DEBIAN-CVE-2026-18495 | Sep 12, 2026 |
| tiff · sles 15.7 | 4.0.9-150000.45.72.1 | SUSE-SU-2026:4845-1 | Nov 7, 2026 |
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