Out-of-bounds Read Affecting libsdl2-image package, versions <2.8.8+dfsg-1+deb13u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.26% (18th percentile)

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  • Snyk IDSNYK-ECHOLATEST-LIBSDL2IMAGE-19698233
  • published12 Sept 2026
  • disclosed6 Apr 2026

Introduced: 6 Apr 2026

CVE-2026-35444  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Echo:latest libsdl2-image to version 2.8.8+dfsg-1+deb13u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsdl2-image package and not the libsdl2-image package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1