CVE Database›Document archive›CVE-2013-4345

CVE-2013-4345

kernel: ansi_cprng: off by one error in non-block size request

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Severity

Moderate

Red Hat Product Security

2.6

CVSS 2.0

Review impact separately from score.

Published · September 17, 2013

Updated · November 21, 2025

Description

Off-by-one error in the get_prng_bytes function in crypto/ansi_cprng.c in the Linux kernel through 3.11.4 makes it easier for context-dependent attackers to defeat cryptographic protection mechanisms via multiple requests for small amounts of data, leading to improper management of the state of the consumed data.

Statement

This issue affects the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2 may address this issue.

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 · 2.6
AV:L/AC:H/Au:N/C:P/I:P/A:N

CWE-193 · Off-by-one Error