CVE-2026-52834

{"id": "CVE-2026-52834", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-52834", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-19T18:03:40.919161Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.3, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 5.3, "exploitabilityScore": 1.4}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "tirr-c", "product": "jxl-oxide", "versions": [{"status": "affected", "version": "< 0.12.6"}]}, {"vendor": "tirr-c", "product": "jxl-grid", "versions": [{"status": "affected", "version": "< 0.6.2"}]}]}], "published": "2026-08-19T15:17:09.810", "references": [{"url": "https://github.com/tirr-c/jxl-oxide/commit/3986dadd3926a95656a642e74a0702d52f5c92e2", "source": "security-advisories@github.com"}, {"url": "https://github.com/tirr-c/jxl-oxide/releases/tag/0.12.6", "source": "security-advisories@github.com"}, {"url": "https://github.com/tirr-c/jxl-oxide/security/advisories/GHSA-5pmv-rx8r-wmv5", "source": "security-advisories@github.com"}, {"url": "https://rustsec.org/advisories/RUSTSEC-2026-0151.html", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-122"}, {"lang": "en", "value": "CWE-131"}, {"lang": "en", "value": "CWE-190"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "jxl-oxide es una implementaci\u00f3n pura en Rust de un decodificador JPEG XL. Antes de jxl-grid 0.6.2, la decodificaci\u00f3n de una imagen JPEG XL manipulada en una plataforma de 32 bits puede desbordar los c\u00e1lculos de longitud en AlignedGrid::with_alloc_tracker y la aritm\u00e9tica relacionada de cuadr\u00edculas y subcuadr\u00edculas. Un fotograma de 65536 x 65536 puede superar el l\u00edmite del \u00e1rea del fotograma mientras desborda el recuento de elementos usize, haciendo que las rutas de renderizado modular, VarDCT o de filtro asignen un b\u00fafer de respaldo m\u00e1s peque\u00f1o que la cuadr\u00edcula l\u00f3gica. Un fotograma recortado peque\u00f1o controlado por el flujo de bits combinado con un lienzo enorme o una regi\u00f3n solicitada tambi\u00e9n puede alcanzar la ruta de composici\u00f3n vulnerable en crates/jxl-render/src/blend.rs a trav\u00e9s de render_frame() ordinario. Operaciones posteriores de subcuadr\u00edcula mutable y puntero sin procesar pueden entonces realizar escrituras fuera de l\u00edmites controladas por el atacante, causando corrupci\u00f3n de memoria, denegaci\u00f3n de servicio o ejecuci\u00f3n de c\u00f3digo arbitrario. Este problema est\u00e1 solucionado en la versi\u00f3n 0.6.2 de jxl-grid."}], "lastModified": "2026-10-27T13:10:00.360", "sourceIdentifier": "security-advisories@github.com"}