SUSE 15 SP7 libheif Important Security Fix Advisory 2026-4378

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## This update for libheif fixes the following issues: * AV1/libaom path allows allocation before libheif rejects mismatched coded dimensions (bsc#1281953). * Caller-configured security limits not enforced for MINI-box parsing (bsc#1281952). * Heap out-of-bounds read in libheif alpha compositing via mismatched per- channel bit depths (bsc#1281951). * Heap-use-after-free and double free in ImageItem::encode_to_bitstream_and_boxes (bsc#1281949). * Incomplete OpenJPEG pre-decode security limits allow unsafe decode through the public API (bsc#1281954). * JPEG 2000 pclr zero-column allocation amplification bypasses max_total_memory (bsc#1281950). * Out-of-bounds heap read in unc_encoder_rgb_pixel_interleave (bsc#1281948). Changes for libheif:

## This update for libheif fixes the following issues: * AV1/libaom path allows allocation before libheif rejects mismatched coded dimensions (bsc#1281953). * Caller-configured security limits not enforced for MINI-box parsing (bsc#1281952). * Heap out-of-bounds read in libheif alpha compositing via mismatched per- channel bit depths (bsc#1281951). * Heap-use-after-free and double free in ImageItem::encode_to_bitstream_and_boxes (bsc#1281949). * Incomplete OpenJPEG pre-decode security limits allow unsafe decode through the public API (bsc#1281954). * JPEG 2000 pclr zero-column allocation amplification bypasses max_total_memory (bsc#1281950). * Out-of-bounds heap read in unc_encoder_rgb_pixel_interleave (bsc#1281948). Changes for libheif:

* CVE-2020-6851 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

* CVE-2020-6851 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* Desktop Applications Module 15-SP7

* SUSE Linux Enterprise Desktop 15 SP7

* SUSE Linux Enterprise Real Time 15 SP7

* SUSE Linux Enterprise Server 15 SP7

* SUSE Linux Enterprise Server for SAP Applications 15 SP7

* SUSE Package Hub 15 15-SP7

An update that solves one vulnerability and has six security fixes can now be

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Announcement ID: SUSE-SU-2026:4378-1 Release Date: 2026-09-28T15:17:28Z Rating: important

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