VulnerabilityPublished 3 Jul 2025Updated 5 Nov 2026

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

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in fe7f7ac8e0c708446ff017453add769ffc15deed : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:19 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch

Available – fixed in fe7f7ac8e0c708446ff017453add769ffc15deed, a8f842534807985d3a676006d140541b87044345, 74388368927e9c52a69524af5bbd6c55eb4690de +12

Exploitation evidence

Disclosed: evidence found.
CVE published 3 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected >=3.2.95 <3.3 >=3.16.50 <3.17 >=3.18.76 <3.19 >=4.1.46 <4.2 >=4.4.93 <4.5 >=4.9.57 <4.10 >=4.13.8 <4.14	Fixed in fe7f7ac8e0c708446ff017453add769ffc15deed a8f842534807985d3a676006d140541b87044345 74388368927e9c52a69524af5bbd6c55eb4690de 41827a2dbdd7880df9881506dee13bc88d4230bb 485e1b741eb838cbe1d6b0e81e5ab62ae6c095cf 7a6d6b68db128da2078ccd9a751dfa3f75c9cf5b 4fa7831cf0ac71a0a345369d1a6084f2b096e55e 4.14 4.10 4.5 4.2 3.19 3.17 3.3 1df80d748f984290c895e843401824215dcfbfb0
LinuxLinux	Affected =4.14	Fixed in–

Description

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.

References

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