DEBIAN-CVE-2026-55373
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-55373
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55373.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-55373
- Upstream
- Published
- 2026-08-25T01:16:36Z
- Modified
- 2026-09-10T09:00:43Z
- Severity
-
- 6.2 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. Versions prior to 3.2.10, 3.3.12, and 3.4.13 contain an infinite-loop vulnerability in SampleCountChannel. The helper roundListSizeUp() rounds a sample-list size up to the next power of two using repeated unsigned left shifts, which terminates for normal values but fails for UINT_MAX: the sequence reaches 0x80000000, and the next left shift wraps the 32-bit value to 0. Because 0 remains less than UINT_MAX, the loop never progresses and never exits. The bug is reachable through public OpenEXRUtil APIs, either by editing the sample-count buffer through SampleCountChannel::Edit (whose destructor calls endEdit()) or by calling SampleCountChannel::set(x, y, UINT_MAX) on a valid pixel. This issue has been fixed in versions 3.2.10, 3.3.12, and 3.4.13.
- References
Affected packages
Debian:12 / openexr
Package
- Name
- openexr
- Purl
- pkg:deb/debian/openexr?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / openexr
Package
- Name
- openexr
- Purl
- pkg:deb/debian/openexr?arch=source&distro=trixie
Debian:14 / openexr
Package
- Name
- openexr
- Purl
- pkg:deb/debian/openexr?arch=source&distro=forky