[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Tinycc-devel] Segmentation violation in use_section1

From: bugs-syssec
Subject: [Tinycc-devel] Segmentation violation in use_section1
Date: Wed, 12 Dec 2018 17:24:10 +0100
User-agent: RUB Webmail/1.3.8 via Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0

Dear all,

While fuzzing tcc, a segmentation violation was found in the use_section1 function.

Attached are a file producing a crash when compiled, the output of the clang address sanitizer and valgrind.

There are multiple inputs leading to the same crash,
they are included in the attached file as comments.

To reproduce, compile the attached input file with tcc

    tcc use_section1-oob-write.c

The latest git version of tcc (commit c4787e3626904fc542bd640cc368a9d306347008) was tested.

Credits: SysSec chair of Ruhr University Bochum

Attachment: valgrind.txt
Description: Text document

Attachment: asan.txt
Description: Text document

Attachment: use_section1-oob_write.c
Description: Text document

reply via email to

[Prev in Thread] Current Thread [Next in Thread]