In the Linux kernel, the following vulnerability has been resolved:
usb: cdns3: gadget: fix state inconsistency on gadget init failure
When cdns3_gadget_start() fails, the DRD hardware is left in gadget mode
while software state remains INACTIVE, creating hardware/software state
inconsistency.
When switching to host mode via sysfs:
echo host > /sys/class/usb_role/13180000.usb-role-switch/role
The role state is not set to CDNS_ROLE_STATE_ACTIVE due to the error,
so cdns_role_stop() skips cleanup because state is still INACTIVE.
This violates the DRD controller design specification (Figure22),
which requires returning to idle state before switching roles.
This leads to a synchronous external abort in xhci_gen_setup() when
setting up the host controller:
[ 516.440698] configfs-gadget 13180000.usb: failed to start g1: -19
[ 516.442035] cdns-usb3 13180000.usb: Failed to add gadget
[ 516.443278] cdns-usb3 13180000.usb: set role 2 has failed
...
[ 1301.375722] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
[ 1301.377716] Internal error: synchronous external abort: 96000010 [#1] PREEMPT SMP
[ 1301.382485] pc : xhci_gen_setup+0xa4/0x408
[ 1301.393391] backtrace:
...
xhci_gen_setup+0xa4/0x408 <-- CRASH
xhci_plat_setup+0x44/0x58
usb_add_hcd+0x284/0x678
...
cdns_role_set+0x9c/0xbc <-- Role switch
Fix by calling cdns_drd_gadget_off() in the error path to properly
clean up the DRD gadget state.
References
Configurations
Configuration 1 (hide)
|
History
08 May 2026, 18:49
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux linux Kernel
Linux |
|
| CWE | NVD-CWE-noinfo | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CPE | cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
|
| References | () https://git.kernel.org/stable/c/5a85599ca4d2584d89dc69f4fc49303b75a42338 - Patch | |
| References | () https://git.kernel.org/stable/c/9b1d301fbae837bf6979a19030b81d869bb15f7a - Patch | |
| References | () https://git.kernel.org/stable/c/b490f0e477d26d29ed51e5dc47e3b9bd31bcb49f - Patch | |
| References | () https://git.kernel.org/stable/c/c32f8748d70c8fc77676ad92ed76cede17bf2c48 - Patch | |
| References | () https://git.kernel.org/stable/c/c7e475ae3a5593c5db21b3b7dca4ba8bdac9b47f - Patch | |
| References | () https://git.kernel.org/stable/c/cfca84f5986afceb63a3adf39d4a98e915aebbc2 - Patch | |
| References | () https://git.kernel.org/stable/c/fb7110a052467098967284ef14d306810b354937 - Patch |
01 May 2026, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-01 15:16
Updated : 2026-05-08 18:49
NVD link : CVE-2026-31754
Mitre link : CVE-2026-31754
CVE.ORG link : CVE-2026-31754
JSON object : View
Products Affected
linux
- linux_kernel
CWE