CVE-2025-38376usb: chipidea: udc: disconnect/reconnect from host when do suspend/resume
- 5.5MediumCVSS base score
- 0.18%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: usb: chipidea: udc: disconnect/reconnect from host when do suspend/resume Shawn and John reported a hang issue during system suspend as below: - USB gadget is enabled as Ethernet - There is data transfer over USB Ethernet (scp a big file between host and device) - Device is going in/out suspend (echo mem > /sys/power/state) The root cause is the USB device controller is suspended but the USB bus is still active which caused the USB host continues to transfer data with device and the device continues to queue USB requests (in this case, a delayed TCP ACK packet trigger the issue) after controller is suspended, however the USB controller clock is already gated off. Then if udc driver access registers after that point, the system will hang. The correct way to avoid such issue is to disconnect device from host when the USB bus is not at suspend state. Then the host will receive disconnect event and stop data transfer in time. To continue make USB gadget device work after system resume, this will reconnect device automatically. To make usb wakeup work if USB bus is already at suspend state, this will keep connection for it only when USB device controller has enabled wakeup capability.
Timeline
ID reserved
By Linux
- 3 months later
· 3 months later
Published
- 10 months later
· 10 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.18% · top 93% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 235ffc17d0146d806f6ad8c094c24ff4878f2edb – < 937f49be49d6ee696eb5457c21ff89c135c9b5ae
- affected 235ffc17d0146d806f6ad8c094c24ff4878f2edb – < c68a27bbebbdb4e0ccd45d4f0df7111a09ddac24
- affected 235ffc17d0146d806f6ad8c094c24ff4878f2edb – < 5fd585fedb79bac2af9976b0fa3ffa354f0cc0bb
- affected 235ffc17d0146d806f6ad8c094c24ff4878f2edb – < 31a6afbe86e8e9deba9ab53876ec49eafc7fd901
- affected 6.2
- unaffected < 6.2
- unaffected 6.6.97 – ≤ 6.6.*
- unaffected 6.12.37 – ≤ 6.12.*
- unaffected 6.15.6 – ≤ 6.15.*
- unaffected 6.16 – ≤ *
References
References4
- https://git.kernel.org/stable/c/937f49be49d6ee696eb5457c21ff89c135c9b5ae (opens in a new tab)
- https://git.kernel.org/stable/c/c68a27bbebbdb4e0ccd45d4f0df7111a09ddac24 (opens in a new tab)
- https://git.kernel.org/stable/c/5fd585fedb79bac2af9976b0fa3ffa354f0cc0bb (opens in a new tab)
- https://git.kernel.org/stable/c/31a6afbe86e8e9deba9ab53876ec49eafc7fd901 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-22627 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-38376)Record last updated .