CVE-2026-31756: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: 5cb3cb3db317c58d50b68f3ca3bb8343ea9d1acd преди e9fcca3e87463013d595c65c2189ffaa32ad3b50; 1ac826cebc2776f91569f2aa9c9c3da2375d2096 преди 8ffe31acb3b77a30ae34d01719a269881569fb7f; 41732f9febdccb4f9b87c13cb915d717d68ccafd преди beab10429439e20708036a66fb0d97ffb79da6a1; ba78c2b3254c4a458c01776612e8a573e12f8d26 преди 4ed9d2dd9f29828c311db6ec4b8e0d34bfd6d6a4; af076a41f8a28faf9ceb9dd2d88aef2c202ef39a преди 61937f686290494998236c680ce0836b8dd63a3f; af076a41f8a28faf9ceb9dd2d88aef2c202ef39a преди 51b62286fc668c6eb74dee7624ec0beec3c5a0ed; af076a41f8a28faf9ceb9dd2d88aef2c202ef39a преди 9bb4b5ed7f8c4f95cc556bdf042b0ba2fa13557a; b39c203690fa1678daecc60f347e43c8b593b969; 5.15.187 преди 5.15.203; 6.1.143 преди 6.1.168; 6.6.96 преди 6.6.134; 6.12.36 преди 6.12.81; 6.15.5 преди 6.16
• Linux Linux: 6.16; преди 6.16; 5.15.203 до 5.15.*; 6.1.168 до 6.1.*; 6.6.134 до 6.6.*; 6.12.81 до 6.12.*; 6.18.22 до 6.18.*; 6.19.12 до 6.19.*; от 7.0 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-31756
• https://nvd.nist.gov/vuln/detail/CVE-2026-31756
• 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