CVE-2025-38556

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Source
https://cve.org/CVERecord?id=CVE-2025-38556
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38556.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-38556
Downstream
Related
Published
2025-08-19T17:02:34.929Z
Modified
2026-05-07T04:15:33.315853Z
Summary
HID: core: Harden s32ton() against conversion to 0 bits
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38556.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
dde5845a529ff753364a6d1aea61180946270bfa
Fixed
6cdf6c708717c5c6897d0800a1793e83757c7491
Fixed
eeeaba737919bdce9885e2a00ac2912f61a3684d
Fixed
3c86548a20d7bc2861aa4de044991a327bebad1a
Fixed
810189546cb6c8f36443ed091d91f1f5d2fc2ec7
Fixed
d3b504146c111548ab60b6ef7aad00bfb1db05a2
Fixed
8b4a94b1510f6a46ec48494b52ee8f67eb4fc836
Fixed
865ad8469fa24de1559f247d9426ab01e5ce3a56
Fixed
a6b87bfc2ab5bccb7ad953693c85d9062aef3fdd

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38556.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.6.20
Fixed
5.10.248
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.198
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.159
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.119
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.46
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.15.10
Type
ECOSYSTEM
Events
Introduced
6.16.0
Fixed
6.16.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38556.json"