CVE Database›Document archive›CVE-2023-52756

CVE-2023-52756

kernel: pwm: Fix double shift bug

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Severity

Moderate

Red Hat Product Security

4.4

CVSS 3.1

Review impact separately from score.

Published · May 21, 2024

Updated · November 2, 2026

Description

[REJECTED CVE] A double shift vulnerability was identified in the Linux kernel's pwm subsystem. The issue involves passing a shifted value instead of a bit number to set/test_bit() functions, resulting in a double shift (e.g., BIT(BIT(1))). While this doesn't cause problems for values 0 or 1, values of 5 or higher could lead to a buffer overflow, potentially allowing attackers to cause a denial of service.

Statement

This CVE has been rejected upstream: https://lore.kernel.org/linux-cve-announce/2024060850-REJECTED-39c1@gregkh/

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 3.1 · 4.4
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE-120 · Buffer Copy without Checking Size of Input