Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 5cb3cb3db317c58d50b68f3ca3bb8343ea9d1acd before e9fcca3e87463013d595c65c2189ffaa32ad3b50; affected 1ac826cebc2776f91569f2aa9c9c3da2375d2096 before 8ffe31acb3b77a30ae34d01719a269881569fb7f; affected 41732f9febdccb4f9b87c13cb915d717d68ccafd before beab10429439e20708036a66fb0d97ffb79da6a1; affected ba78c2b3254c4a458c01776612e8a573e12f8d26 before 4ed9d2dd9f29828c311db6ec4b8e0d34bfd6d6a4; affected af076a41f8a28faf9ceb9dd2d88aef2c202ef39a before 61937f686290494998236c680ce0836b8dd63a3f; affected af076a41f8a28faf9ceb9dd2d88aef2c202ef39a before 51b62286fc668c6eb74dee7624ec0beec3c5a0ed; affected af076a41f8a28faf9ceb9dd2d88aef2c202ef39a before 9bb4b5ed7f8c4f95cc556bdf042b0ba2fa13557a; affected b39c203690fa1678daecc60f347e43c8b593b969; affected 5.15.187 before 5.15.203; affected 6.1.143 before 6.1.168; affected 6.6.96 before 6.6.134; affected 6.12.36 before 6.12.81; affected 6.15.5 before 6.16 |
| Linux / Linux | affected 6.16; unaffected 0 before 6.16; unaffected 5.15.203 through 5.15.*; unaffected 6.1.168 through 6.1.*; unaffected 6.6.134 through 6.6.*; unaffected 6.12.81 through 6.12.*; unaffected 6.18.22 through 6.18.*; unaffected 6.19.12 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/e9fcca3e87463013d595c65c2189ffaa32ad3b50
- https://git.kernel.org/stable/c/8ffe31acb3b77a30ae34d01719a269881569fb7f
- https://git.kernel.org/stable/c/beab10429439e20708036a66fb0d97ffb79da6a1
- https://git.kernel.org/stable/c/4ed9d2dd9f29828c311db6ec4b8e0d34bfd6d6a4
- https://git.kernel.org/stable/c/61937f686290494998236c680ce0836b8dd63a3f
- https://git.kernel.org/stable/c/51b62286fc668c6eb74dee7624ec0beec3c5a0ed
- https://git.kernel.org/stable/c/9bb4b5ed7f8c4f95cc556bdf042b0ba2fa13557a