{"cve":"CVE-2026-91059","nvd":{"published":"2026-10-20T15:17:35.873","modified":"2026-10-20T19:48:50.250","status":"Awaiting Analysis","description":"The GUIX JPEG software decoder enforces no ordering on JPEG markers. A file that places a second `SOF0` frame header after `SOS` re-runs the frame header parser after the output buffer has already been allocated and its geometry latched. The decoder returns `GX_SUCCESS` and publishes a `GX_PIXELMAP` whose reported dimensions and `data_size` exceed the allocation behind it.\n\n\n\nAny consumer that trusts the returned structure reads out of bounds, including GUIX's own display drivers, reached through the ordinary draw path.\n\n\n\nReproduces in the shipped default configuration; `GX_SOFTWARE_DECODER_SUPPORT` is enabled by default.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N","score":6.8},"cvss_v3":null,"cwes":["CWE-125"],"references":["https://github.com/eclipse-threadx/guix/security/advisories/GHSA-cxf2-pgvg-pcw3"],"products":[],"source":"nvd","synced_at":"2026-10-21T03:56:58.798400159+00:00"},"epss":{"cve":"CVE-2026-91059","score":0.00159,"percentile":0.04966,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}