SB2026061858 - Ubuntu update for openimageio
Published: June 18, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 vulnerabilities.
1) Out-of-bounds write (CVE-ID: CVE-2026-43903)
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.
The vulnerability exists due to out-of-bounds write in the SGI RLE decoder when parsing a crafted .sgi file. A remote attacker can supply a crafted .sgi file with an RLE count exceeding the scanline width to cause a denial of service.
User interaction is required to open the crafted file, and the issue affects release builds where the bounds checks compile to no-ops.
2) Out-of-bounds write (CVE-ID: CVE-2026-43904)
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 execute arbitrary code.
The vulnerability exists due to out-of-bounds write in the Softimage PIC RLE decoder when parsing a crafted .pic file. A remote attacker can trick the victim into opening a crafted file to execute arbitrary code.
User interaction is required to open a crafted file.
3) Heap-based buffer overflow (CVE-ID: CVE-2026-43906)
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 a heap-based buffer overflow in the HEIF decoder when processing crafted HEIF images with mismatched subimage metadata. A remote attacker can supply a specially crafted image to execute arbitrary code.
The issue occurs when a larger scanline from one subimage is copied into a buffer allocated for a smaller subimage after subimage switching.
4) Integer overflow (CVE-ID: CVE-2026-43907)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/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 overwrite heap memory.
The vulnerability exists due to integer overflow in QueryRGBBufferSizeInternal in the DPX decoder when parsing a crafted DPX file with kCbYCr or kABGR descriptors. A remote attacker can supply a specially crafted DPX file to cause a denial of service and overwrite heap memory.
User interaction is required to open or process the crafted DPX file through a code path that reads pixel data.
5) Integer overflow (CVE-ID: CVE-2026-43908)
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 cause a denial of service and potentially execute arbitrary code.
The vulnerability exists due to integer overflow leading to an out-of-bounds write in the ConvertCbYCrYToRGB function in the DPX 4:2:2 decoder when parsing a crafted DPX file. A remote attacker can supply a specially crafted DPX file to cause a denial of service and potentially execute arbitrary code.
User interaction is required to open or process a crafted DPX file.
6) Integer overflow (CVE-ID: CVE-2026-43909)
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 in SwapRGBABytes() in the DPX ABGR decoder when parsing a crafted kABGR DPX image with large dimensions. A remote attacker can supply a specially crafted DPX file to execute arbitrary code or cause a denial of service.
User interaction is required to open or process the crafted DPX file.
Remediation
Install update from vendor's website.