Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mmc: vub300: fix use-after-free on disconnect The vub300 driver maintains an explicit reference count for the controller and its driver data and the last reference can in theory be dropped after the driver has been unbound. This specifically means that the controller allocation must not be device managed as that can lead to use-after-free. Note that the lifetime is currently also incorrectly tied the parent USB device rather than interface, which can lead to memory leaks if the driver is unbound without its device being physically disconnected (e.g. on probe deferral). Fix both issues by reverting to non-managed allocation of the controller.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.17.1, < 6.18.23 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/8f4d20a710225ec7a565f6a0459862d3b1f32330Patch
- https://git.kernel.org/stable/c/ea7468f61be033f4e18b95f2912010ed1d175d75Patch
- https://git.kernel.org/stable/c/ef0448c569b37ceabdd038e9faa311e5179127b0Patch
FAQ
What is CVE-2026-31650?
CVE-2026-31650 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: mmc: vub300: fix use-after-free on disconnect The vub300 driver maintains an explicit reference count for the controller and its d...
How severe is CVE-2026-31650?
CVE-2026-31650 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-31650?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.