Medium [CVE-2026-19967] Heap-based buffer overflow in file decompression
This medium-severity Red Hat Linux advisory covers CVE-2026-19967 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat package: qt6-qtquick3d.
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Summary
A flaw was found in Open Asset Import Library Assimp. A remote attacker could exploit a heap-based buffer overflow vulnerability, which occurs when a program writes more data to a memory block than it was intended to hold.
This specific flaw exists within the Assimp::Compression::decompressBlock function during file compression decompression. By sending a specially crafted input, an attacker could potentially cause the application to crash (denial of service), disclose sensitive information, or execute arbitrary code.
A heap-based buffer overflow flaw in the Assimp library's decompression function (Assimp::Compression::decompressBlock) affects Red Hat products that process 3D model files, including `qt5-qt3d` and `qt6-qtquick3d` in Red Hat Enterprise Linux and Red Hat In-Vehicle OS.
While exploitation requires user interaction, such as opening a malicious 3D asset, a successful remote attack could lead to significant impact on system confidentiality, integrity, and availability. Red Hat severity: Moderate — CVSS 6.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L).
Weakness: CWE-120. Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat package: qt6-qtquick3d; Red Hat package: qt5-qt3d.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation checklist
- To mitigate this vulnerability, avoid processing untrusted or unverified 3D model files with applications that utilize the Assimp library. As this flaw requires user interaction to trigger, exercising caution with the source of 3D assets can reduce exposure. No direct configuration or operational control exists to disable the vulnerable decompression functionality without impacting the core features of the library.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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