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CVE-2014-7843

kernel: aarch64: copying from /dev/zero causes local DoS

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Severity

Moderate

Red Hat Product Security

4

CVSS 2.0

Review impact separately from score.

Published · November 13, 2014

Updated · November 21, 2025

Description

The __clear_user function in arch/arm64/lib/clear_user.S in the Linux kernel before 3.17.4 on the ARM64 platform allows local users to cause a denial of service (system crash) by reading one byte beyond a /dev/zero page boundary.

Statement

Not vulnerable.

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.

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 · 4
AV:L/AC:H/Au:N/C:N/I:N/A:C

CWE-390 · Detection of Error Condition Without Action