Out-of-bounds Read in Libsdl Sdl Image
CVE-2026-35444
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L.
EPSS exploit prediction
EPSS: 0.003 (18.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: -0.000
Affected products
- Libsdl Sdl Image
- Libsdl-Org Sdl Image — versions < 996bf12888925932daace576e09c3053410896f8
Weakness classification (CWE)
References
- github.com/libsdl-org/SDL_image/security/advisories/GHSA-gq8w-x74c-h6p7 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-35444?
- CVE-2026-35444 is a high-severity vulnerability in Libsdl Sdl Image, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2026-04-06.
- How severe is CVE-2026-35444?
- High severity. CVSS v3 base score is 7.1 out of 10.