SB20260424123 - Anolis OS update for OpenEXR
Published: April 24, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 vulnerabilities.
1) Type conversion (CVE-ID: CVE-2026-34379)
CWE-ID: CWE-704 - Type conversion
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:H/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 incorrect type conversion or cast in LossyDctDecoder_execute() when decoding a DWA- or DWAB-compressed EXR file containing a FLOAT-type channel. A remote attacker can supply a specially crafted EXR file to cause a denial of service.
User interaction is required to open or process the crafted file.
2) Use of uninitialized resource (CVE-ID: CVE-2026-34543)
CWE-ID: CWE-908 - Use of Uninitialized Resource
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to use of uninitialized resource in undo_pxr24_impl and exr_uncompress_buffer when parsing a crafted PXR24 EXR file with a truncated zlib stream. A remote attacker can supply a specially crafted EXR file to disclose sensitive information.
The issue is triggered during decoding under default settings.
3) Out-of-bounds write (CVE-ID: CVE-2026-34544)
CWE-ID: CWE-787 - Out-of-bounds write
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 cause a denial of service and corrupt memory.
The vulnerability exists due to out-of-bounds write in uncompress_b44_impl() in internal_b44.c when decoding a crafted B44 or B44A EXR file via exr_decoding_run(). A remote attacker can supply a specially crafted EXR file to cause a denial of service and corrupt memory.
User interaction is required to open or decode the crafted file.
4) 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.
Remediation
Install update from vendor's website.