CVE-2016-6830

critical

Published 2017-01-10 · Modified 2026-05-06

CVSS v3

9.8

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

CVSS v2

7.5

VIR risk

9.8

Description

The "process-execute" and "process-spawn" procedures in CHICKEN Scheme used fixed-size buffers for holding the arguments and environment variables to use in its execve() call. This would allow user-supplied argument/environment variable lists to trigger a buffer overrun. This affects all releases of CHICKEN up to and including 4.11 (it will be fixed in 4.12 and 5.0, which are not yet released).

Predictions

Exploit likelihood

97%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2016-6830

vendor Authored 2026-05-27

Vendor advisory: secalert@redhat.com — http://lists.nongnu.org/archive/html/chicken-announce/2016-08/msg00001.html

OS impact

OS	Version	Status	Fixed in
debian	bookworm	fixed	`4.12.0-0.2`
debian	bullseye	fixed	`4.12.0-0.2`
debian	forky	fixed	`4.12.0-0.2`
debian	sid	fixed	`4.12.0-0.2`
debian	trixie	fixed	`4.12.0-0.2`

Application impact

Vendor	Product	Versions	Fixed
call-cc	chicken	`{"endIncluding":"4.11.0"}`

References

CWEs

CWE-119

Verify integrity in audit chain (admin only). AS-IS.