Description
In the Linux kernel, the following vulnerability has been resolved:
usb: dwc2: gadget: Fix spin_lock/unlock mismatch in dwc2_hsotg_udc_stop()
dwc2_gadget_exit_clock_gating() internally calls call_gadget() macro, which expects hsotg->lock to be held since it does spin_unlock/spin_lock around the gadget driver callback invocation.
However, dwc2_hsotg_udc_stop() calls dwc2_gadget_exit_clock_gating() without holding the lock. This leads to: - spin_unlock on a lock that is not held (undefined behavior) - The lock remaining held after dwc2_gadget_exit_clock_gating() returns, causing a deadlock when spin_lock_irqsave() is called later in the same function.
Fix this by acquiring hsotg->lock before calling dwc2_gadget_exit_clock_gating() and releasing it afterwards, which satisfies the locking requirement of the call_gadget() macro.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 5cb3cb3db317c58d50b68f3ca3bb8343ea9d1acd, < e9fcca3e87463013d595c65c2189ffaa32ad3b50; >= 1ac826cebc2776f91569f2aa9c9c3da2375d2096, < 8ffe31acb3b77a30ae34d01719a269881569fb7f; >= 41732f9febdccb4f9b87c13cb915d717d68ccafd, < beab10429439e20708036a66fb0d97ffb79da6a1; >= ba78c2b3254c4a458c01776612e8a573e12f8d26, < 4ed9d2dd9f29828c311db6ec4b8e0d34bfd6d6a4; >= af076a41f8a28faf9ceb9dd2d88aef2c202ef39a, < 61937f686290494998236c680ce0836b8dd63a3f; >= af076a41f8a28faf9ceb9dd2d88aef2c202ef39a, < 51b62286fc668c6eb74dee7624ec0beec3c5a0ed; >= af076a41f8a28faf9ceb9dd2d88aef2c202ef39a, < 9bb4b5ed7f8c4f95cc556bdf042b0ba2fa13557a; b39c203690fa1678daecc60f347e43c8b593b969; >= 5.15.187, < 5.15.203; >= 6.1.143, < 6.1.168; >= 6.6.96, < 6.6.134; >= 6.12.36, < 6.12.81; >= 6.15.5, < 6.16 |
| Linux | Linux | 6.16 |
References
- https://git.kernel.org/stable/c/4ed9d2dd9f29828c311db6ec4b8e0d34bfd6d6a4Patch
- https://git.kernel.org/stable/c/51b62286fc668c6eb74dee7624ec0beec3c5a0edPatch
- https://git.kernel.org/stable/c/61937f686290494998236c680ce0836b8dd63a3fPatch
- https://git.kernel.org/stable/c/8ffe31acb3b77a30ae34d01719a269881569fb7fPatch
- https://git.kernel.org/stable/c/9bb4b5ed7f8c4f95cc556bdf042b0ba2fa13557aPatch
- https://git.kernel.org/stable/c/beab10429439e20708036a66fb0d97ffb79da6a1Patch
- https://git.kernel.org/stable/c/e9fcca3e87463013d595c65c2189ffaa32ad3b50Patch
Timeline
- Published
- May 1, 2026
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed