{"id":"CVE-2026-47709","summary":"libheif has a NULL pointer dereference in heif_image_handle_get_image_tiling for malformed unci image missing ispe","details":"libheif is a HEIF and AVIF file format decoder and encoder. Versions prior to 1.22.0 crashes in the public C API `heif_image_handle_get_image_tiling()` when a malformed uncompressed HEIF image item has an associated `uncC` property but no associated `ispe` property. In debug builds this trips the `ispe && uncC` assertion in `ImageItem_uncompressed::get_heif_image_tiling()`. In a release/NDEBUG ASan build, the same file causes a null pointer read at address `0xa8`. Version 1.22.0 fixes the issue.","aliases":["GHSA-4h72-vqgp-9376"],"modified":"2026-07-24T04:02:35.811660292Z","published":"2026-07-21T21:31:14.724Z","related":["SUSE-SU-2026:22153-1","SUSE-SU-2026:2622-1","openSUSE-SU-2026:10878-1","openSUSE-SU-2026:20974-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-476"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47709.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47709.json"},{"type":"ADVISORY","url":"https://github.com/strukturag/libheif/security/advisories/GHSA-4h72-vqgp-9376"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47709"},{"type":"REPORT","url":"https://github.com/strukturag/libheif/issues/1802"},{"type":"FIX","url":"https://github.com/strukturag/libheif/pull/1806"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/strukturag/libheif","events":[{"introduced":"0"},{"fixed":"0c81a846b7401dbdb7118afd0761057f21e43511"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.22.0"}],"source":"AFFECTED_FIELD"}}],"versions":["v1.21.2","v1.21.1","v1.21.0","v1.20.1","v1.20.0","v1.19.5","v1.19.4","v1.19.3","v1.19.2","v1.19.1","v1.19.0","v1.18.0","v1.18.0-rc1","v1.17.6","v1.17.5","v1.17.4","v1.17.3","v1.17.2","v1.17.1","v1.17.0","v1.16.2","v1.16.1","v1.16.0","v1.15.2","v1.15.1","v1.15.0","v1.14.2","v1.14.1","v1.14.0","v1.13.0","v1.12.0","v1.11.0","v1.10.0","v1.9.1","v1.9.0","v1.8.0","v1.7.0","v1.3.2","v1.3.1","v1.3.0","v1.2.0","v1.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47709.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}