All errata/sisyphus_riscv64/ALT-PU-2026-4076-1
ALT-PU-2026-4076-1

Package update openexr in branch sisyphus_riscv64

Version3.4.6-alt1
Task#0
Published2026-03-04
Max severityMEDIUM
Severity:

Closed issues (1)

CVE-2026-26981
MEDIUM6.5

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.0 through 3.3.6 and 3.4.0 through 3.4.4, a heap-buffer-overflow (OOB read) occurs in the `istream_nonparallel_read` function in `ImfContextInit.cpp` when parsing a malformed EXR file through a memory-mapped `IStream`. A signed integer subtraction produces a negative value that is implicitly converted to `size_t`, resulting in a massive length being passed to `memcpy`. Versions 3.3.7 and 3.4.5 contain a patch.

Published: 2026-02-24Modified: 2026-02-25
CVSS 3.xMEDIUM 6.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H