CVE-2026-34589

Name
CVE-2026-34589
Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.2.0 to before 3.2.7, 3.3.9, and 3.4.9, the DWA lossy decoder constructs temporary per-component block pointers using signed 32-bit arithmetic. For a large enough width, the calculation overflows and later decoder stores operate on a wrapped pointer outside the allocated rowBlock backing store. This vulnerability is fixed in 3.2.7, 3.3.9, and 3.4.9.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security-advisories@github.com https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-p8xc-w3q4-h64x
security-advisories@github.com https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.7
security-advisories@github.com https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.9
security-advisories@github.com https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.9
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/security/cve/CVE-2026-34589
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://bugzilla.redhat.com/show_bug.cgi?id=2455411
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34589.json

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:* openexr >= 3.2.0 < 3.2.7
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:* openexr >= 3.3.0 < 3.3.9
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:* openexr >= 3.4.0 < 3.4.9

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
openexr edge-community 3.4.10-r0 Théo Zanchi <theo.zanchi@gmail.com> fixed
openexr edge-community 3.4.4-r0 Théo Zanchi <theo.zanchi@gmail.com> possibly vulnerable
openexr edge-community 3.4.2-r0 Théo Zanchi <theo.zanchi@gmail.com> possibly vulnerable
openexr edge-community 3.3.2-r0 Mark Riedesel <mark+alpine@klowner.com> possibly vulnerable
openexr 3.23-community 3.4.2-r0 Théo Zanchi <theo.zanchi@gmail.com> possibly vulnerable