LibreDWG <=0.14 OOBR in Dwggrep::bit_convert_TU
CVE-2026-9504 Published on May 25, 2026

GNU LibreDWG Dwggrep Utility dwggrep.c bit_convert_TU out-of-bounds
A weakness has been identified in GNU LibreDWG up to 0.14. Affected is the function bit_convert_TU of the file programs/dwggrep.c of the component Dwggrep Utility. This manipulation causes out-of-bounds read. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. Patch name: be996bf2178a40e98720f18c2414815d244413db. Applying a patch is the recommended action to fix this issue.

NVD

Timeline

Advisory disclosed

VulDB entry created

VulDB entry last update

Weakness Types

Out-of-bounds Read

The software reads data past the end, or before the beginning, of the intended buffer. Typically, this can allow attackers to read sensitive information from other memory locations or cause a crash. A crash can occur when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string. The expected sentinel might not be located in the out-of-bounds memory, causing excessive data to be read, leading to a segmentation fault or a buffer overflow. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent read operation then produces undefined or unexpected results.

What is a Buffer Overflow Vulnerability?

The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.

CVE-2026-9504 has been classified to as a Buffer Overflow vulnerability or weakness.


Products Associated with CVE-2026-9504

Want to know whenever a new CVE is published for GNU Libredwg? stack.watch will email you.

GNU Libredwg
 

Affected Versions

GNU LibreDWG: