Vulnerabilities > CVE-2024-26716 - NULL Pointer Dereference vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
In the Linux kernel, the following vulnerability has been resolved: usb: core: Prevent null pointer dereference in update_port_device_state Currently, the function update_port_device_state gets the usb_hub from udev->parent by calling usb_hub_to_struct_hub. However, in case the actconfig or the maxchild is 0, the usb_hub would be NULL and upon further accessing to get port_dev would result in null pointer dereference. Fix this by introducing an if check after the usb_hub is populated.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
References
- https://git.kernel.org/stable/c/12783c0b9e2c7915a50d5ec829630ff2da50472c
- https://git.kernel.org/stable/c/12783c0b9e2c7915a50d5ec829630ff2da50472c
- https://git.kernel.org/stable/c/465b545d1d7ef282192ddd4439b08279bdb13f6f
- https://git.kernel.org/stable/c/465b545d1d7ef282192ddd4439b08279bdb13f6f
- https://git.kernel.org/stable/c/ed85777c640cf9e6920bb1b60ed8cd48e1f4d873
- https://git.kernel.org/stable/c/ed85777c640cf9e6920bb1b60ed8cd48e1f4d873