CVE-2025-38103 | HID: usbhid: Eliminate recurrent out-of-bounds bug in usbhid_parse()

In the Linux kernel, the following vulnerability has been resolved: HID: usbhid: Eliminate recurrent out-of-bounds bug in usbhid_parse() Update struct hid_descriptor to better reflect the mandatory and optional parts of the HID Descriptor as per USB HID 1.11 specification. Note: the kernel currently does not parse any optional HID class descriptors, only the mandatory report descriptor. Update all references to member element desc[0] to rpt_desc. Add test to verify bLength and bNumDescriptors values are valid. Replace the for loop with direct access to the mandatory HID class descriptor member for the report descriptor. This eliminates the possibility of getting an out-of-bounds fault. Add a warning message if the HID descriptor contains any unsupported optional HID class descriptors.

Published: 2025-07-03 Last update: 2025-12-16 Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-38103 is rated Low Risk (36.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.08%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-38103

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-29 0.02% 0.08% +0.07%
2 2025-12-17 0.05% 0.02% -0.04%
3 2025-10-17 — 0.05% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-38103

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.2 [email protected]

Weakness enumeration for CVE-2025-38103

OS Trackers for CVE-2025-38103

vendor priority summary link
debian not yet assigned CVE-2025-38103 not yet assigned priority: Debian including 2 source packages (linux, linux-6.1), 6 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6. https://security-tracker.debian.org/tracker/CVE-2025-38103
redhat medium — https://access.redhat.com/security/cve/CVE-2025-38103
suse low CVE-2025-38103 severity low: SUSE including 475 source package names (2.1.3-6.73:kernel-default-base-6.4.0-34.1.21.11, 2.1.3-7.50:kernel-default-6.4.0-34.1, …), 956 product×package rows across 196 product lines (Container suse/sl-micro/6.0/base-os-container, Container suse/sl-micro/6.0/kvm-os-container, … (196 product lines)): Fixed 704, Known Affected 231, First Fixed 21. https://www.suse.com/security/cve/CVE-2025-38103/
ubuntu medium CVE-2025-38103 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1551 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1145, released 169, ignored 168, needed 44, not-affected 22, needs-triage 2, pending 1. https://ubuntu.com/security/CVE-2025-38103

Affected software / configurations for CVE-2025-38103

Vendor Product Version Raw CPE
linux linux_kernel >= 3.2.95, < 3.3 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 3.16.50, < 3.17 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 3.18.76, < 3.19 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 4.1.46, < 4.2 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 4.4.93, < 4.5 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 4.9.57, < 4.10 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 4.13.8, < 4.14 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 4.14.1, < 5.4.295 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.5, < 5.10.239 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.11, < 5.15.186 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.16, < 6.1.142 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.2, < 6.6.94 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.7, < 6.12.34 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.13, < 6.15.3 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel 4.14 cpe:2.3:o:linux:linux_kernel:4.14:-:*:*:*:*:*:*
linux linux_kernel 4.14 cpe:2.3:o:linux:linux_kernel:4.14:rc5:*:*:*:*:*:*
linux linux_kernel 4.14 cpe:2.3:o:linux:linux_kernel:4.14:rc6:*:*:*:*:*:*
linux linux_kernel 4.14 cpe:2.3:o:linux:linux_kernel:4.14:rc7:*:*:*:*:*:*
linux linux_kernel 4.14 cpe:2.3:o:linux:linux_kernel:4.14:rc8:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

References for CVE-2025-38103

URL Tags
https://git.kernel.org/stable/c/1df80d748f984290c895e843401824215dcfbfb0 Patch
https://git.kernel.org/stable/c/41827a2dbdd7880df9881506dee13bc88d4230bb Patch
https://git.kernel.org/stable/c/485e1b741eb838cbe1d6b0e81e5ab62ae6c095cf Patch
https://git.kernel.org/stable/c/4fa7831cf0ac71a0a345369d1a6084f2b096e55e Patch
https://git.kernel.org/stable/c/74388368927e9c52a69524af5bbd6c55eb4690de Patch
https://git.kernel.org/stable/c/7a6d6b68db128da2078ccd9a751dfa3f75c9cf5b Patch
https://git.kernel.org/stable/c/a8f842534807985d3a676006d140541b87044345 Patch
https://git.kernel.org/stable/c/fe7f7ac8e0c708446ff017453add769ffc15deed Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Mailing List Third Party Advisory
cvelogic Threat Intelligence