SB2026060923 - Anolis OS update for OpenEXR
Published: June 9, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 vulnerabilities.
1) Integer overflow (CVE-ID: CVE-2026-39886)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to signed integer overflow in ht_undo_impl() in src/lib/OpenEXRCore/internal_ht.cpp when processing a crafted HTJ2K-compressed EXR file. A remote attacker can supply a specially crafted EXR file to cause a denial of service.
On allocator-permissive hosts, the wrapped negative bytes-per-line value may be used as a per-scanline pointer advance, which could lead to a heap out-of-bounds write.
2) Heap-based buffer overflow (CVE-ID: CVE-2026-34545)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to heap-based buffer overflow in the HTJ2K decoder in internal_ht.cpp when parsing a crafted EXR file with HTJ2K compression. A remote attacker can supply a specially crafted EXR file to execute arbitrary code.
User interaction is required to open or otherwise process the crafted file.
3) Integer overflow (CVE-ID: CVE-2026-34588)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to read and write out-of-bounds memory.
The vulnerability exists due to integer overflow in internal_exr_undo_piz() in the PIZ decoder when parsing a crafted EXR file. A remote attacker can supply a specially crafted EXR file to read and write out-of-bounds memory.
The issue occurs during PIZ decompression because signed 32-bit arithmetic can wrap while advancing the working wavelet pointer, causing the next channel to decode from an incorrect address.
4) Integer overflow (CVE-ID: CVE-2026-40244)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to corrupt heap memory.
The vulnerability exists due to integer overflow in DWA setupChannelData planarUncRle pointer arithmetic when parsing a crafted EXR file. A remote attacker can supply a crafted DWAA/DWAB EXR file with large dimensions to corrupt heap memory.
User interaction is required to open the crafted file, and the issue is triggered on non-DCT channels, including UINT or single-channel layouts.
5) Integer overflow (CVE-ID: CVE-2026-34589)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to execute arbitrary code or cause a denial of service.
The vulnerability exists due to integer overflow leading to an out-of-bounds write in the DWA lossy decoder when parsing a crafted scanline DWAA file. A remote attacker can supply a specially crafted file to execute arbitrary code or cause a denial of service.
User interaction is required to open or process the crafted file.
6) Integer overflow (CVE-ID: CVE-2026-40250)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to corrupt the heap.
The vulnerability exists due to integer overflow or wraparound in DwaCompressor_uncompress() in internal_dwa_compressor.h when parsing a crafted DWAA/DWAB EXR file. A remote attacker can trick the victim into opening a crafted file to corrupt the heap.
User interaction is required to open a crafted file.
Remediation
Install update from vendor's website.