| Name | CVE-2026-4775 |
| Description | A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations, potentially causing a denial of service (application crash) or arbitrary code execution. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-6203-1 |
| Debian Bugs | 1132632 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| tiff (PTS) | bullseye | 4.2.0-1+deb11u5 | vulnerable |
| bullseye (security) | 4.2.0-1+deb11u7 | vulnerable | |
| bookworm | 4.5.0-6+deb12u3 | vulnerable | |
| bookworm (security) | 4.5.0-6+deb12u4 | fixed | |
| trixie | 4.7.0-3+deb13u1 | vulnerable | |
| trixie (security) | 4.7.0-3+deb13u2 | fixed | |
| forky, sid | 4.7.1-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| tiff | source | bookworm | 4.5.0-6+deb12u4 | DSA-6203-1 | ||
| tiff | source | trixie | 4.7.0-3+deb13u2 | DSA-6203-1 | ||
| tiff | source | (unstable) | 4.7.1-2 | 1132632 |
https://bugzilla.redhat.com/show_bug.cgi?id=2450768
https://gitlab.com/libtiff/libtiff/-/work_items/807
https://gitlab.com/libtiff/libtiff/-/work_items/787
https://gitlab.com/libtiff/libtiff/-/commit/782a11d6b5b61c6dc21e714950a4af5bf89f023c