{"schemaVersion":3,"id":"MGASA-2026-0247","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Updated libheif packages fix security vulnerabilities\n\nlibheif has a Heap OOB Read/SEGV Crash via Zero samples_per_chunk.\n(CVE-2026-32738)\nlibheif is Vulnerable to Infinite Loop DoS via stts Sample Duration\nLookup. (CVE-2026-32739)\nHeap-Buffer-Overflow Write in Grid Tile Chroma Compositing.\n(CVE-2026-32740)\nlibheif has a heap buffer overflow in decode_mask_image().\n(CVE-2026-32741)\nUninitialized Heap Memory Information Leak via Failed Grid Tiles.\n(CVE-2026-32814)\nHeap Buffer OOB Read in overlay compositing due to wrong alpha stride.\n(CVE-2026-32882)\nstrukturag libheif stsz/stts track.cc load out-of-bounds.\n(CVE-2026-3950)\nlibheif allows Out-of-bounds vector access leading to invalid\ndereference (DoS). (CVE-2026-41069)\nHeap buffer over-read in SampleAuxInfoReader via crafted HEIF sequence\nfile with mismatched saiz sample count. (CVE-2026-41071)\nA critical heap-based buffer overflow vulnerability exists in libheif\nv1.21.2 (and likely earlier versions) within the handling of\nuncompressed HEIF images (ISO/IEC 23001-17, unci item type). When\nprocessing a tiled image with chroma subsampling (e.g., 4:2:0 or 4:2:2),\nthe library fails to scale spatial offsets for the chroma planes. This\nleads to out-of-bounds memory writes when decoding any tile other than\nthe top-left one, potentially resulting in remote code execution.\n(CVE-2026-47178)\nWrapped icef compressed-unit range check causes out-of-bounds read in\nuncompressed HEIF decoder. (CVE-2026-49271)","dates":{"published":"2026-07-13T21:24:46.000Z","modified":"2026-07-13T21:30:06.035Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"mageia","product":"libheif","name":"libheif","label":"libheif","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/libheif","purlType":"rpm","versions":[{"text":"< 1.20.2-3.1.mga10","noFixRecorded":false,"fixedIn":null},{"text":"< 1.20.2-3.1.mga10.tainted","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.20.2-3.1.mga10 | < 1.20.2-3.1.mga10.tainted","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisories.mageia.org/MGASA-2026-0247.html","label":"advisories.mageia.org/MGASA-2026-0247.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=35729","label":"bugs.mageia.org/show_bug.cgi?id=35729","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-8454-1","label":"ubuntu.com/security/notices/USN-8454-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/notices/USN-8479-1","label":"ubuntu.com/security/notices/USN-8479-1","hostname":"ubuntu.com","tags":["Advisory"]}],"lineage":{"upstream":["CVE-2026-32738","CVE-2026-32739","CVE-2026-32740","CVE-2026-32741","CVE-2026-32814","CVE-2026-32882","CVE-2026-3950","CVE-2026-41069","CVE-2026-41071","CVE-2026-47178","CVE-2026-49271"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-07-13T21:24:46.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-13T21:30:06.035Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T01:55:47.912Z","stale":false,"partial":false}}