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CVE-2015-6806

screen: Stack overflow due to deep recursion causing process freeze

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Severity

Low

Red Hat Product Security

3.5

CVSS 2.0

Review impact separately from score.

Published · August 7, 2015

Updated · November 21, 2025

Description

The MScrollV function in ansi.c in GNU screen 4.3.1 and earlier does not properly limit recursion, which allows remote attackers to cause a denial of service (stack consumption) via an escape sequence with a large repeat count value.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 2.0 · 3.5
AV:N/AC:M/Au:S/C:N/I:N/A:P

CWE-121 · Stack-based Buffer Overflow