CVE-2026-52834
HighCVSS 7.3Summary
jxl-oxide, a pure Rust implementation of a JPEG XL decoder, prior to jxl-grid 0.6.2, contains a vulnerability in length calculations on 32-bit platforms when decoding a crafted JPEG XL image. This can lead to out-of-bounds writes, memory corruption, denial of service, or arbitrary code execution.
Risk Assessment
The risk involves potential remote code execution or memory corruption via a crafted image, which could compromise system integrity and data confidentiality.
Recommendation
It is recommended to update jxl-grid to version 0.6.2 or later, which includes the fix.
Original NVD description (English source)
jxl-oxide is a pure Rust implementation of a JPEG XL decoder. Prior to jxl-grid 0.6.2, decoding a crafted JPEG XL image on a 32-bit platform can overflow length calculations in AlignedGrid::with_alloc_tracker and related grid and subgrid arithmetic. A 65536 x 65536 frame can pass the frame-area limit while overflowing the usize element count, causing modular, VarDCT, or filter rendering paths to allocate a backing buffer smaller than the logical grid. A tiny bitstream-controlled cropped frame combined with a huge canvas or requested region can also reach the vulnerable composition path in crates/jxl-render/src/blend.rs through ordinary render_frame(). Later mutable subgrid and raw-pointer operations can then perform attacker-controlled out-of-bounds writes, causing memory corruption, denial of service, or arbitrary code execution. This issue is fixed in jxl-grid version 0.6.2.