| Name | CVE-2026-35444 |
| Description | SDL_image is a library to load images of various formats as SDL surfaces. In do_layer_surface() in src/IMG_xcf.c, pixel index values from decoded XCF tile data are used directly as colormap indices without validating them against the colormap size (cm_num). A crafted .xcf file with a small colormap and out-of-range pixel indices causes heap out-of-bounds reads of up to 762 bytes past the colormap allocation. Both IMAGE_INDEXED code paths are affected (bpp=1 and bpp=2). The leaked heap bytes are written into the output surface pixel data, making them potentially observable in the rendered image. This vulnerability is fixed with commit 996bf12888925932daace576e09c3053410896f8. |
| 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) |
| Debian Bugs | 1133010, 1133011, 1133012 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libsdl2-image (PTS) | bullseye | 2.0.5+dfsg1-2 | vulnerable |
| bookworm | 2.6.3+dfsg-1 | vulnerable | |
| trixie | 2.8.8+dfsg-1 | vulnerable | |
| forky, sid | 2.8.12+dfsg-1 | fixed | |
| libsdl3-image (PTS) | trixie | 3.2.4+ds-1 | vulnerable |
| forky, sid | 3.4.4+ds-1 | fixed | |
| sdl-image1.2 (PTS) | bullseye | 1.2.12-12 | vulnerable |
| bookworm | 1.2.12-13 | vulnerable | |
| forky, sid, trixie | 1.2.12-14 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libsdl2-image | source | (unstable) | 2.8.10+dfsg-1 | 1133010 | ||
| libsdl3-image | source | (unstable) | 3.4.2+ds-1 | 1133011 | ||
| sdl-image1.2 | source | (unstable) | (unfixed) | 1133012 |
[trixie] - libsdl2-image <no-dsa> (Minor issue)
[bookworm] - libsdl2-image <no-dsa> (Minor issue)
[bullseye] - libsdl2-image <postponed> (Minor issue)
[trixie] - libsdl3-image <no-dsa> (Minor issue)
[trixie] - sdl-image1.2 <no-dsa> (Minor issue)
[bookworm] - sdl-image1.2 <no-dsa> (Minor issue)
[bullseye] - sdl-image1.2 <postponed> (Minor issue)
https://github.com/libsdl-org/SDL_image/security/advisories/GHSA-gq8w-x74c-h6p7
https://github.com/libsdl-org/SDL_image/commit/996bf12888925932daace576e09c3053410896f8 (main)
https://github.com/libsdl-org/SDL_image/commit/a1a06276a51ca7e6e63908b200df8a278d8c5039 (SDL2)
https://github.com/libsdl-org/SDL_image/commit/678ac6a4c6021853485050926f45db08ba6aec48 (SDL-1.2)