CVE-2026-47254

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{"affected": [{"affectedData": [{"product": "libheif", "vendor": "strukturag", "versions": [{"status": "affected", "version": "< 1.22.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:struktur:libheif:*:*:*:*:*:*:*:*", "matchCriteriaId": "CB01CAAF-1D64-461B-8CC0-3CF2FBAC60A5", "versionEndExcluding": "1.22.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.0, `Track::init_sample_timing_table()` in `libheif/sequences/track.cc` stores an out-of-bounds chunk index (`m_chunks.size()`) into `m_presentation_timeline` when the number of chunks defined in the `stco` box is less than the number of samples in `stsz`. A subsequent call to `heif_track_get_next_raw_sequence_sample()` reads `m_chunks[chunk_idx]` with that OOB index, causing a heap-buffer-overflow. Version 1.22.0 fixes the issue."}, {"lang": "es", "value": "libheif es un decodificador y codificador de formato de archivo HEIF y AVIF. Antes de la versi\u00f3n 1.22.0, \u2019Track::init_sample_timing_table()\u2019 en \u2019libheif/sequences/track.cc\u2019 almacena un \u00edndice de fragmento fuera de l\u00edmites (\u2019m_chunks.size()\u2019) en \u2019m_presentation_timeline\u2019 cuando el n\u00famero de fragmentos definido en la caja \u2019stco\u2019 es menor que el n\u00famero de muestras en \u2019stsz\u2019. Una llamada posterior a \u2019heif_track_get_next_raw_sequence_sample()\u2019 lee \u2019m_chunks[chunk_idx]\u2019 con ese \u00edndice OOB, causando un desbordamiento de b\u00fafer de pila. La versi\u00f3n 1.22.0 corrige el problema."}], "id": "CVE-2026-47254", "lastModified": "2026-10-24T19:10:00.127", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-47254", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-22T18:20:13.158321Z", "version": "2.0.3"}}]}, "published": "2026-07-21T22:17:12.957", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/strukturag/libheif/security/advisories/GHSA-wqjg-4x9g-6cvg"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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