CVE-2026-110601: falha de média gravidade em saitoha libsixel
libsixel before 1.8.7-r1 and 1.9.0 through 1.10.5 Heap Out-of-Bounds Write via GIF
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13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 5.8epss 0.2%
libsixel before 1.8.7-r1 and 1.9.0 through 1.10.5 contains a heap out-of-bounds write vulnerability in gif_init_frame() in src/fromgif.c, which never checks the GIF transparent color index against the palette size. Attackers can supply a crafted GIF with a small color table and large transparent index, processed with a background color set, to write bytes past the palette buffer, causing heap corruption or crashes.
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Produtos afetados
saitoha · libsixelCVEs relacionadas — saitoha libsixel
No mesmo produto, das mais perigosas para as menos.
CVE-2026-33023HIGHlibsixel: Use-after-free in load_with_gdkpixbuf()EPSS 0.3%CVE-2026-33019HIGHlibsixel: Integer overflow leads to Out-of-bounds Read in img2sixelEPSS 0.3%CVE-2025-9300MEDIUMsaitoha libsixel img2sixel encoder.c sixel_debug_print_palette stack-based overflowEPSS 0.3%CVE-2026-33021HIGHlibsixel: Use-after-free in sixel_encoder_encode_bytes()EPSS 0.2%CVE-2026-33020HIGHlibsixel: Integer Overflow in write_png_to_file() leads to Heap-based Buffer OverflowEPSS 0.2%CVE-2026-33018HIGHlibsixel: Use-After-Free in load_gif()EPSS 0.2%
Referências
https://github.com/libsixel/libsixel/blob/v1.10.5/src/fromgif.c#L219-L240https://github.com/saitoha/libsixel/blob/v1.8.7/src/fromgif.c#L182-L248https://github.com/saitoha/libsixel/commit/bdbab09816eb9188429c37a50b97c5e66dfe5047https://github.com/saitoha/libsixel/issues/220https://github.com/saitoha/libsixel/releases/tag/v1.8.7-r1https://hackmd.io/@haind-pwn/libsixel-gif-transparent-index-oob-writehttps://www.vulncheck.com/advisories/libsixel-before-1.8.7-r1-and-1.9.0-through-1.10.5-heap-out-of-bounds-write-via-gif