In the Linux kernel, the following vulnerability has been resolved:
USB: legousbtower: fix use-after-free on disconnect race
mutex_unlock() may access the mutex structure after releasing the lock and therefore cannot be used to manage lifetime of objects directly (unlike spinlocks and refcounts). [1][2]
Use a kref to release the driver data to avoid use-after-free in mutex_unlock() when release() races with disconnect().
[1] a51749ab34d9 ("locking/mutex: Document that mutex_unlock() is non-atomic") [2] 2b9d9e0a9ba0 ("locking/mutex: Clarify that mutex_unlock(), and most other sleeping locks, can still use the lock object after it's unlocked")
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linuxUpgrade linux-6.12Upgrade linux-6.1 | Jul 28, 2026 | Jul 28, 2026 |
| Redhat_linux | — | No solution exists | Jul 31, 2026 | Jul 25, 2026 |
| Ubuntu | — | Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-raspiUpgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-raspi-7.0Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-gke-7.0Upgrade linux-image-oem-26.04Upgrade linux-image-7.0.0-1012-awsUpgrade linux-image-realtimeUpgrade linux-image-gke-64kUpgrade linux-image-gke-64k-7.0Upgrade linux-image-oem-26.04bUpgrade linux-image-oem-26.04aUpgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-raspi-realtime-7.0Upgrade linux-image-nvidia-7.0Upgrade linux-image-ibmUpgrade linux-image-gcp-7.0Upgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-aws-64k-7.0Upgrade linux-image-aws-7.0Upgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-realtime-64kUpgrade linux-image-gcp-64kUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-generic-7.0Upgrade linux-image-nvidia-bosUpgrade linux-image-awsUpgrade linux-image-realtime-7.0Upgrade linux-image-7.0.0-2018-nvidia-bos-64kUpgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-nvidiaUpgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-oem-7.0Upgrade linux-image-gke-hwe-26.04Upgrade linux-image-gkeUpgrade linux-image-gcpUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-genericUpgrade linux-image-7.0.0-2018-nvidia-bosUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-nvidia-bos-64kUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-ibm-7.0Upgrade linux-image-generic-64k-7.0Upgrade linux-image-7.0.0-1013-oemUpgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-nvidia-64kUpgrade linux-image-7.0.0-1019-raspiUpgrade linux-image-raspi-realtimeUpgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-7.0.0-31-genericUpgrade linux-image-generic-64kUpgrade linux-image-virtualUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-7.0.0-1013-ibmUpgrade linux-image-virtual-7.0Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-aws-64kUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-7.0.0-1019-raspi-realtime | Sep 14, 2026 | Sep 7, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 3, 2026 | Jul 25, 2026 |
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