CVE-2026-62377— struktur AG libheif 异常处理不当漏洞

libheif: Reachable assertion in HeifContext::get_track() aborts on a valid-but-empty HEIF sequence file (context.cc:2110)

libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted HEIF sequence accepted by heif_context_read_from_memory() can leave the context with no registered sequence tracks and crash when heif_context_get_track(ctx, 0) is called. HeifContext::get_track() in libheif/context.cc executes assert(has_sequence()) before its normal error handling, so assert-enabled builds abort instead of allowing the public wrapper in libheif/api/libheif/heif_sequences.cc to return null. In release builds, removing the assertion lets the track_id zero path dereference m_tracks.begin()->second on an empty map, which is undefined behavior and typically crashes. The issue is reachable through documented public APIs after parsing attacker-controlled bytes. This issue is fixed in version 1.23.1.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

可达断言

struktur AG libheif 异常处理不当漏洞

struktur AG libheif是struktur AG组织的一款图像编解码库。 struktur AG libheif 1.23.1之前版本存在安全漏洞，该漏洞源于heif_context_read_from_memory()处理特制HEIF序列时未正确注册序列轨道，导致调用heif_context_get_track(ctx, 0)时触发断言或空指针解引用，造成崩溃。

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