CVE-2026-4738GDAL Bundled zlib (inftree9.c) Pointer Offset Optimization Undefined Behavior Allows Heap Corruption or Remote Code Execution

Description

Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in OSGeo gdal (frmts/zlib/contrib/infback9 modules). This vulnerability is associated with program files inftree9.C‎. This issue affects gdal: before 3.11.0.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/OSGeo/gdal/pull/12244 patch