CVE-2026-64345
Last modified
CVE-2026-64345 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_printer: take kref only for successful open printer_open() returns -EBUSY when the character device is already open, but it increments dev->kref regardless of the return value. VFS does not call ->release() for a failed open, so every rejected second open permanently leaks one reference. Move kref_get() into the successful-open branch.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_printer: take kref only for successful open printer_open() returns -EBUSY when the character device is already open, but it increments dev->kref regardless of the return value. VFS does not call ->release() for a failed open, so every rejected second open permanently leaks one reference. Move kref_get() into the successful-open branch.
Metrics
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 4.4.241, < 4.5 | — |
| Linux | Linux Kernel | >= 4.9.241, < 4.10 | — |
| Linux | Linux Kernel | >= 4.14.203, < 4.15 | — |
| Linux | Linux Kernel | >= 4.19.154, < 4.20 | — |
| Linux | Linux Kernel | >= 5.4.73, < 5.5 | — |
| Linux | Linux Kernel | >= 5.8.17, < 5.9 | — |
| Linux | Linux Kernel | >= 5.9.2, < 5.10.261 | — |
| Linux | Linux Kernel | >= 5.11, < 6.6.145 | — |
| Linux | Linux Kernel | >= 6.7, < 6.12.96 | — |
| Linux | Linux Kernel | >= 6.13, < 6.18.39 | — |
| Linux | Linux Kernel | >= 6.19, < 7.1.4 | — |
| Linux | Linux Kernel | 7.2 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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