CVE-2025-38535phy: tegra: xusb: Fix unbalanced regulator disable in UTMI PHY mode
- 7.8HighCVSS base score
- 0.18%Exploitation in 30 daysEPSS · top 92% 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: phy: tegra: xusb: Fix unbalanced regulator disable in UTMI PHY mode When transitioning from USB_ROLE_DEVICE to USB_ROLE_NONE, the code assumed that the regulator should be disabled. However, if the regulator is marked as always-on, regulator_is_enabled() continues to return true, leading to an incorrect attempt to disable a regulator which is not enabled. This can result in warnings such as: [ 250.155624] WARNING: CPU: 1 PID: 7326 at drivers/regulator/core.c:3004 _regulator_disable+0xe4/0x1a0 [ 250.155652] unbalanced disables for VIN_SYS_5V0 To fix this, we move the regulator control logic into tegra186_xusb_padctl_id_override() function since it's directly related to the ID override state. The regulator is now only disabled when the role transitions from USB_ROLE_HOST to USB_ROLE_NONE, by checking the VBUS_ID register. This ensures that regulator enable/disable operations are properly balanced and only occur when actually transitioning to/from host mode.
Timeline
ID reserved
By Linux
- 4 months later
· 4 months later
Published
- 15 months later
· 15 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 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.18% · top 92% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 49d46e3c7e597e8b00c6fc16e6fd7a92044f4371 – < ceb645ac6ce052609ee5c8f819a80e8881789b04
- affected 49d46e3c7e597e8b00c6fc16e6fd7a92044f4371 – < cdcb0ffd6448f6be898956913a42bd08e59fb2ae
- affected 49d46e3c7e597e8b00c6fc16e6fd7a92044f4371 – < 1bb85b5c2bd43b687c3d54eb6328917f90dd38fc
- affected 49d46e3c7e597e8b00c6fc16e6fd7a92044f4371 – < 5367cdeb75cb6c687ca468450bceb2602ab239d8
- affected 49d46e3c7e597e8b00c6fc16e6fd7a92044f4371 – < ec7f98ff05f0649af0adeb4808c7ba23d6111ef9
- affected 49d46e3c7e597e8b00c6fc16e6fd7a92044f4371 – < eaa420339658615d26c1cc95cd6cf720b9aebfca
- affected 49d46e3c7e597e8b00c6fc16e6fd7a92044f4371 – < cefc1caee9dd06c69e2d807edc5949b329f52b22
- affected 5.7
- unaffected < 5.7
- unaffected 5.10.241 – ≤ 5.10.*
- unaffected 5.15.190 – ≤ 5.15.*
- unaffected 6.1.147 – ≤ 6.1.*
- unaffected 6.6.100 – ≤ 6.6.*
- unaffected 6.12.40 – ≤ 6.12.*
- unaffected 6.15.8 – ≤ 6.15.*
- unaffected 6.16 – ≤ *
References
References9
- https://git.kernel.org/stable/c/ceb645ac6ce052609ee5c8f819a80e8881789b04 (opens in a new tab)
- https://git.kernel.org/stable/c/cdcb0ffd6448f6be898956913a42bd08e59fb2ae (opens in a new tab)
- https://git.kernel.org/stable/c/1bb85b5c2bd43b687c3d54eb6328917f90dd38fc (opens in a new tab)
- https://git.kernel.org/stable/c/5367cdeb75cb6c687ca468450bceb2602ab239d8 (opens in a new tab)
- https://git.kernel.org/stable/c/ec7f98ff05f0649af0adeb4808c7ba23d6111ef9 (opens in a new tab)
- https://git.kernel.org/stable/c/eaa420339658615d26c1cc95cd6cf720b9aebfca (opens in a new tab)
- https://git.kernel.org/stable/c/cefc1caee9dd06c69e2d807edc5949b329f52b22 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html (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-2025-26110 (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-2025-38535)Record last updated .