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Untriaged
Permalink CVE-2026-40493
9.8 CRITICAL
  • CVSS version: 3.1
  • Attack vector (AV): NETWORK
  • Attack complexity (AC): LOW
  • Privileges required (PR): NONE
  • User interaction (UI): NONE
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): HIGH
  • Integrity impact (I): HIGH
  • Availability impact (A): HIGH
created 4 days, 20 hours ago Activity log
  • Created suggestion 4 days, 20 hours ago
SAIL has heap buffer overflow in PSD decoder — bpp mismatch in LAB 16-bit mode

SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. Prior to commit c930284445ea3ff94451ccd7a57c999eca3bc979, the PSD codec computes bytes-per-pixel (`bpp`) from raw header fields `channels * depth`, but the pixel buffer is allocated based on the resolved pixel format. For LAB mode with `channels=3, depth=16`, `bpp = (3*16+7)/8 = 6`, but the format `BPP40_CIE_LAB` allocates only 5 bytes per pixel. Every pixel write overshoots, causing a deterministic heap buffer overflow on every row. Commit c930284445ea3ff94451ccd7a57c999eca3bc979 contains a patch.

Affected products

sail
  • ==< c930284445ea3ff94451ccd7a57c999eca3bc979

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pkgs.sail

Spark-compatible compute engine built on Apache Arrow and DataFusion

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Simulator daemon for autonomous sailing boats

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Web interface for managing and controlling 3D printers with Klipper

pkgs.sail-riscv

Formal specification of the RISC-V architecture, written in Sail

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pkgs.ocamlPackages.sail

Language for describing the instruction-set architecture (ISA) semantics of processors

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