{"document":{"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright © Red Hat, Inc. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"legal_disclaimer","text":"This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.","title":"Terms of Use"}],"publisher":{"category":"vendor","contact_details":"https://access.redhat.com/security/team/contact/","issuing_authority":"Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.","name":"Red Hat Product Security","namespace":"https://www.redhat.com"},"references":[{"category":"self","summary":"Canonical URL","url":"https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68431.json"}],"title":"libheif: libheif has Potential Heap Buffer Over-Read","tracking":{"current_release_date":"2026-06-28T07:10:37+00:00","generator":{"date":"2026-06-28T07:10:37+00:00","engine":{"name":"Red Hat SDEngine","version":"5.2.6"}},"id":"CVE-2025-68431","initial_release_date":"2025-12-29T19:09:54.628000+00:00","revision_history":[{"date":"2025-12-29T19:09:54.628000+00:00","number":"1","summary":"Initial version"},{"date":"2026-02-25T15:01:30+00:00","number":"2","summary":"Current version"},{"date":"2026-06-28T07:10:37+00:00","number":"3","summary":"Last generated version"}],"status":"final","version":"3"}},"product_tree":{"branches":[{"category":"vendor","name":"Red Hat","product":{"name":"All currently supported Red Hat products","product_id":"red_hat_products","product_identification_helper":{"cpe":"cpe:/a:redhat"}}}]},"vulnerabilities":[{"cve":"CVE-2025-68431","discovery_date":"2025-12-29T20:01:28.811344+00:00","flags":[{"label":"vulnerable_code_not_present","product_ids":["red_hat_products"]}],"notes":[{"category":"description","text":"A heap buffer over-read flaw was found in the libheif HEIF/AVIF image decoder and encoder used in multimedia applications. When processing a crafted HEIF image containing overlay image items, the function HeifPixelImage::overlay() may compute a negative row length, which underflows when converted to an unsigned size_t. This underflow value is passed to memcpy(), resulting in a read past the end of the source image buffer. If a user opens or decodes such a crafted image, this can trigger an application crash and denial of service.","title":"Vulnerability description"},{"category":"other","text":"Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.","title":"Statement"},{"category":"general","text":"The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.","title":"CVSS score applicability"}],"product_status":{"known_not_affected":["red_hat_products"]},"references":[{"category":"self","summary":"Canonical URL","url":"https://access.redhat.com/security/cve/CVE-2025-68431"},{"category":"external","summary":"https://www.cve.org/CVERecord?id=CVE-2025-68431","url":"https://www.cve.org/CVERecord?id=CVE-2025-68431"}],"release_date":"2025-12-29T19:09:54.628000+00:00","scores":[{"cvss_v3":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"products":["red_hat_products"]}],"title":"libheif: libheif has Potential Heap Buffer Over-Read"}]}