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CVE-2025-38535— phy: tegra: xusb: Fix unbalanced regulator disable in UTMI PHY mode

EPSS 0.03% · P7
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I. Basic Information for CVE-2025-38535

Vulnerability Information
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Vulnerability Title
phy: tegra: xusb: Fix unbalanced regulator disable in UTMI PHY mode
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于UTMI PHY模式下调节器禁用不平衡，可能导致警告或错误。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 49d46e3c7e597e8b00c6fc16e6fd7a92044f4371 ~ ceb645ac6ce052609ee5c8f819a80e8881789b04 -
LinuxLinux 5.7 -

II. Public POCs for CVE-2025-38535

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III. Intelligence Information for CVE-2025-38535

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Same Patch Batch · Linux · 2025-08-16 · 59 CVEs total

CVE-2025-38519mm/damon: fix divide by zero in damon_get_intervals_score()
CVE-2025-38507HID: nintendo: avoid bluetooth suspend/resume stalls
CVE-2025-38504io_uring/zcrx: fix pp destruction warnings
CVE-2025-38505wifi: mwifiex: discard erroneous disassoc frames on STA interface
CVE-2025-38506KVM: Allow CPU to reschedule while setting per-page memory attributes
CVE-2025-38503btrfs: fix assertion when building free space tree
CVE-2025-38515drm/sched: Increment job count before swapping tail spsc queue
CVE-2025-38516pinctrl: qcom: msm: mark certain pins as invalid for interrupts
CVE-2025-38517lib/alloc_tag: do not acquire non-existent lock in alloc_tag_top_users()
CVE-2025-38518x86/CPU/AMD: Disable INVLPGB on Zen2
CVE-2025-38514rxrpc: Fix oops due to non-existence of prealloc backlog struct
CVE-2025-38520drm/amdkfd: Don't call mmput from MMU notifier callback
CVE-2025-38521drm/imagination: Fix kernel crash when hard resetting the GPU
CVE-2025-38522sched/ext: Prevent update_locked_rq() calls with NULL rq
CVE-2025-38523cifs: Fix the smbd_response slab to allow usercopy
CVE-2025-38524rxrpc: Fix recv-recv race of completed call
CVE-2025-38525rxrpc: Fix irq-disabled in local_bh_enable()
CVE-2025-38526ice: add NULL check in eswitch lag check
CVE-2025-38527smb: client: fix use-after-free in cifs_oplock_break
CVE-2025-38528bpf: Reject %p% format string in bprintf-like helpers

Showing top 20 of 59 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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Same vendor: Linux

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