UBUNTU-CVE-2026-40250

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Source
https://ubuntu.com/security/CVE-2026-40250
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40250.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-40250
Upstream
Published
2026-04-21T02:16:00Z
Modified
2026-10-17T12:58:52Z
Severity
  • 8.4 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, internal_dwa_compressor.h:1040 performs chan->width * chan->bytes_per_element in int32 arithmetic without a (size_t) cast. This is the same overflow pattern fixed in other decoders by CVE-2026-34589/34588/34544, but this line was missed. Versions 3.4.10, 3.3.10, and 3.2.8 contain a fix that addresses internal_dwa_compressor.h:1040.

References

Affected packages

Ubuntu:26.10 / openexr

Package

Name
openexr
Purl
pkg:deb/ubuntu/openexr?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.1.13-2build1
3.4.6+ds-4ubuntu3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libopenexr-3-4-33",
            "binary_version":  "3.4.6+ds-4ubuntu3"
        },
        {
            "binary_name":  "openexr",
            "binary_version":  "3.4.6+ds-4ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40250.json"