CVE-2026-27622

Publication date 3 March 2026

Last updated 30 June 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.4 · High

Score breakdown

Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In CompositeDeepScanLine::readPixels, per-pixel totals are accumulated in vector<unsigned int> total_sizes for attacker-controlled large counts across many parts, total_sizes[ptr] wraps modulo 2^32. overall_sample_count is then derived from wrapped totals and used in samples[channel].resize(overall_sample_count). Decode pointer setup/consumption proceeds with true sample counts, and write operations in core unpack (generic_unpack_deep_pointers) overrun the undersized composite sample buffer. This vulnerability is fixed in v3.2.6, v3.3.8, and v3.4.6.

Status

Package Ubuntu Release Status
openexr 26.04 LTS resolute
Fixed 3.1.13-2ubuntu0.26.04.1~esm1
25.10 questing
Vulnerable
24.04 LTS noble
Fixed 3.1.5-5.1ubuntu0.1~esm1
22.04 LTS jammy
Fixed 2.5.7-1ubuntu0.1~esm2
20.04 LTS focal
Fixed 2.3.0-6ubuntu0.5+esm2
18.04 LTS bionic
Fixed 2.2.0-11.1ubuntu1.9+esm1
16.04 LTS xenial
Fixed 2.2.0-10ubuntu2.6+esm4

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
openexr

Severity score breakdown

CVSS version:

Base score 8.4 · High

Vector: 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

Base score 7.4 · High

Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

Other references

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