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2 vulnerabilities found for 8cc by rui314
CVE-2026-50643 (GCVE-0-2026-50643)
Vulnerability from nvd – Published: 2026-06-18 08:58 – Updated: 2026-06-18 12:29 X_Open Source Unsupported When Assigned
VLAI
EPSS
VEX
Title
Out‑of‑Bounds Read in 8cc
Summary
8cc is vulnerable to an Out‑of‑Bounds Read due to improper handling of #line directives and GNU linemarkers. The compiler accepts attacker-controlled filename and line number metadata and later uses it without validation when accessing source line arrays.
By supplying invalid or oversized line numbers, an attacker can trigger out-of-bounds memory access and a crash.
Maintainer of this project was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Version corresponding to the commit b480958 was tested and confirmed as vulnerable, other versions were not tested but might also be vulnerable.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/06/CVE-2026-50641 | third-party-advisory |
| https://github.com/rui314/8cc | product |
Credits
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CVE-2026-50643 (GCVE-0-2026-50643)
Vulnerability from cvelistv5 – Published: 2026-06-18 08:58 – Updated: 2026-06-18 12:29 X_Open Source Unsupported When Assigned
VLAI
EPSS
VEX
Title
Out‑of‑Bounds Read in 8cc
Summary
8cc is vulnerable to an Out‑of‑Bounds Read due to improper handling of #line directives and GNU linemarkers. The compiler accepts attacker-controlled filename and line number metadata and later uses it without validation when accessing source line arrays.
By supplying invalid or oversized line numbers, an attacker can trigger out-of-bounds memory access and a crash.
Maintainer of this project was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Version corresponding to the commit b480958 was tested and confirmed as vulnerable, other versions were not tested but might also be vulnerable.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/06/CVE-2026-50641 | third-party-advisory |
| https://github.com/rui314/8cc | product |
Credits
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