CVE-2025-38556

Advisory lineage Upstream: 0 Downstream: 60
Modified
Published: 19 Aug 2025, 17:02
Last modified:11 May 2026, 21:30

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7.1 HIGH
v3.1 (nvd)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

19 Aug 2025, 17:02
Published
Vulnerability first disclosed
11 May 2026, 21:30
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 7%

Techniques & Countermeasures

  • CWE-125•Out-of-bounds Read

    The product reads data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • linux•linux

    ≥ dde5845a529ff753364a6d1aea61180946270bfa, < 6cdf6c708717c5c6897d0800a1793e83757c7491 | ≥ dde5845a529ff753364a6d1aea61180946270bfa, < eeeaba737919bdce9885e2a00ac2912f61a3684d | ≥ dde5845a529ff753364a6d1aea61180946270bfa, < 3c86548a20d7bc2861aa4de044991a327bebad1a | ≥ dde5845a529ff753364a6d1aea61180946270bfa, < 810189546cb6c8f36443ed091d91f1f5d2fc2ec7 | ≥ dde5845a529ff753364a6d1aea61180946270bfa, < d3b504146c111548ab60b6ef7aad00bfb1db05a2 | ≥ dde5845a529ff753364a6d1aea61180946270bfa, < 8b4a94b1510f6a46ec48494b52ee8f67eb4fc836 | ≥ dde5845a529ff753364a6d1aea61180946270bfa, < 865ad8469fa24de1559f247d9426ab01e5ce3a56 | ≥ dde5845a529ff753364a6d1aea61180946270bfa, < a6b87bfc2ab5bccb7ad953693c85d9062aef3fdd | 2.6.20

  • linux•linux_kernel

    ≥ 2.6.20, < 6.12.46 | ≥ 6.13, < 6.15.10 | ≥ 6.16, < 6.16.1

References (8)