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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-38556 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: HID: core: Harden s32ton() against conversion to 0 bits Testing by the syzbot fuzzer showed that the HID core gets a shift-out-of-bounds exception when it tries to convert a 32-bit quantity to a 0-bit quantity. Ideally this should never occur, but there are buggy devices and some might have a report field with size set to zero; we shouldn't reject the report or the device just because of that. Instead, harden the s32ton() routine so that it returns a reasonable result instead of crashing when it is called with the number of bits set to 0 -- the same as what snto32() does.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/3c86548a20d7bc2861aa4de044991a327bebad1a kernel.org
https://git.kernel.org/stable/c/6cdf6c708717c5c6897d0800a1793e83757c7491 kernel.org
https://git.kernel.org/stable/c/810189546cb6c8f36443ed091d91f1f5d2fc2ec7 kernel.org
https://git.kernel.org/stable/c/865ad8469fa24de1559f247d9426ab01e5ce3a56 kernel.org Patch 
https://git.kernel.org/stable/c/8b4a94b1510f6a46ec48494b52ee8f67eb4fc836 kernel.org Patch 
https://git.kernel.org/stable/c/a6b87bfc2ab5bccb7ad953693c85d9062aef3fdd kernel.org Patch 
https://git.kernel.org/stable/c/d3b504146c111548ab60b6ef7aad00bfb1db05a2 kernel.org Patch 
https://git.kernel.org/stable/c/eeeaba737919bdce9885e2a00ac2912f61a3684d kernel.org

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read cwe source acceptance level NIST  

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-38556
NVD Published Date:
08/19/2025
NVD Last Modified:
01/19/2026
Source:
kernel.org