CVE-2019-12495

Published: May 31, 2019Modified: Jun 17, 2026

5.5

Vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitability: 1.8 / Impact: 3.6

Source: NVD

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.

Affected (1)

Products: Tinycc: Tinycc

Tinycc

1 product

Tinycc

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Tinycc Tinycc	Version 0.9.27

Related CWEs

CWE-787

Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

References (6)

http://www.securityfocus.com/bid/108541

Source: cve@mitre.org

https://lists.nongnu.org/archive/html/tinycc-devel/2019-05/msg00044.html

Source: cve@mitre.org

ExploitThird Party Advisory

https://repo.or.cz/tinycc.git/commit/d04ce7772c2bc2781ab2502e0b1f1964488814b5

Source: cve@mitre.org

PatchThird Party Advisory

http://www.securityfocus.com/bid/108541

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.nongnu.org/archive/html/tinycc-devel/2019-05/msg00044.html

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

https://repo.or.cz/tinycc.git/commit/d04ce7772c2bc2781ab2502e0b1f1964488814b5

Source: af854a3a-2127-422b-91ae-364da2661108

PatchThird Party Advisory

Timeline

No history available yet.