7.8

CVE-2025-38535

phy: tegra: xusb: Fix unbalanced regulator disable in UTMI PHY mode

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.7 < 5.10.241
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.190
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.147
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.100
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.40
Linux ≫ Linux Kernel Version >= 6.13 < 6.15.8
Linux ≫ Linux Kernel Version6.16 Updaterc1
Linux ≫ Linux Kernel Version6.16 Updaterc2
Linux ≫ Linux Kernel Version6.16 Updaterc3
Linux ≫ Linux Kernel Version6.16 Updaterc4
Linux ≫ Linux Kernel Version6.16 Updaterc5
Linux ≫ Linux Kernel Version6.16 Updaterc6
Debian ≫ Debian Linux Version11.0
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.047
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/1bb85b5c2bd43b687c3d54eb6328917f90dd38fc
Patch
https://git.kernel.org/stable/c/5367cdeb75cb6c687ca468450bceb2602ab239d8
Patch
https://git.kernel.org/stable/c/ec7f98ff05f0649af0adeb4808c7ba23d6111ef9
Patch
https://git.kernel.org/stable/c/eaa420339658615d26c1cc95cd6cf720b9aebfca
Patch
https://git.kernel.org/stable/c/cefc1caee9dd06c69e2d807edc5949b329f52b22
Patch
https://git.kernel.org/stable/c/cdcb0ffd6448f6be898956913a42bd08e59fb2ae
Patch
https://git.kernel.org/stable/c/ceb645ac6ce052609ee5c8f819a80e8881789b04
Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
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https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
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