{"id":"CVE-2026-52834","aliases":["GHSA-5pmv-rx8r-wmv5","RUSTSEC-2026-0151"],"url":"https://o3.security/vulnerability/CVE-2026-52834","summary":"jxl-oxide: Out-of-bounds writes due to integer overflow in jxl-grid on 32-bit platforms","details":"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.","published":"2026-08-19T14:55:32.138Z","modified":"2026-08-21T03:46:29.090000310Z","cvss":{"score":7.3,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H"},"epss":{"score":0.0013,"percentile":0.02972,"asOf":"2026-09-07"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"jxl-grid","fixedVersion":"0.6.2"}],"fix":{"url":"https://github.com/tirr-c/jxl-oxide/commit/3986dadd3926a95656a642e74a0702d52f5c92e2","label":"tirr-c/jxl-oxide@3986dad"},"references":[{"type":"WEB","url":"https://github.com/tirr-c/jxl-oxide/releases/tag/0.12.6"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52834.json"},{"type":"ADVISORY","url":"https://github.com/tirr-c/jxl-oxide/security/advisories/GHSA-5pmv-rx8r-wmv5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52834"},{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2026-0151.html"},{"type":"FIX","url":"https://github.com/tirr-c/jxl-oxide/commit/3986dadd3926a95656a642e74a0702d52f5c92e2"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-21T03:46:29.090000310Z"}}