REDHAT-BUG-2537936: Buffer Overflow
Published Sep 22, 2026
·Updated
LibreOffice Draw can import PDF documents. A heap buffer overflow existed when importing a stream object. The length of the stream was taken from the object's own dictionary and was not checked against the number of bytes actually present, so copying the stream read and wrote past the end of the buffer holding it. In fixed versions the declared length is clamped to the bytes actually read.
Affected Software
1 affected component
LibreOffice Draw
Event History
Sep 22, 2026
Data Sourced
via Red Hat·04:14 PM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
Who is exposed to this issue?
Users of LibreOffice Draw who import PDF documents are exposed, particularly where PDFs can come from untrusted sources.
2
What must an attacker provide to trigger the overflow?
An attacker would need to provide a PDF containing a stream object whose declared length exceeds the bytes actually present. During import, the vulnerable code could copy beyond the buffer allocated for that stream.