Description
An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to a one-byte out-of-bounds write in the gsym_addr function in x86_64-gen.c. This occurs because tccasm.c mishandles section switches.
References (3)
Core 3
Core References
Exploit, Third Party Advisory x_refsource_misc
https://lists.nongnu.org/archive/html/tinycc-devel/2019-05/msg00044.html
Patch, Third Party Advisory x_refsource_misc
https://repo.or.cz/tinycc.git/commit/d04ce7772c2bc2781ab2502e0b1f1964488814b5
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/108541
Scores
CVSS v3
5.5
EPSS
0.0122
EPSS Percentile
65.1%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Details
CWE
CWE-787
Status
published
Products (1)
tinycc/tinycc
0.9.27
Published
May 31, 2019
Tracked Since
Feb 18, 2026