CVE-2026-34378
- Source
- https://cve.org/CVERecord?id=CVE-2026-34378
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34378.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-34378
- Aliases
-
- GHSA-v76p-4qvv-vh4g
- Downstream
ALPINE (1)
BELL (1)
DEBIAN (1)
JLSEC (1)
openSUSE (1)
UBUNTU (1)
- Related
- Published
- 2026-04-06T15:19:34Z
- Modified
- 2026-10-28T02:31:03Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- OpenEXR has a signed integer overflow in generic_unpack() when parsing EXR files with crafted negative dataWindow.min.x
- Details
-
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.4.0 to before 3.4.9, a missing bounds check on the dataWindow attribute in EXR file headers allows an attacker to trigger a signed integer overflow in generic_unpack(). By setting dataWindow.min.x to a large negative value, OpenEXRCore computes an enormous image width, which is later used in a signed integer multiplication that overflows, causing the process to terminate with SIGILL via UBSan. This vulnerability is fixed in 3.4.9.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-190" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34378.json" }- References
Affected packages
Git / github.com/academysoftwarefoundation/openexr
Affected ranges
- Type
- GIT
- Repo
- https://github.com/academysoftwarefoundation/openexr
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "3.4.0" }, { "fixed": "3.4.9" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "original_tag": "v3.4.9", "range": [ { "fixed": "b5fa98ac6b5fc660c0295123c1d02bbf687dbec3" } ], "source": "REFERENCES_TAG" }, { "cpe": "cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*", "range": [ { "introduced": "3.4.0" }, { "fixed": "3.4.9" } ], "source": "CPE_RANGE" } ] }