CVE-2024-26716: usb: core: Prevent null pointer dereference in update_port_device_state
First published: Wed Apr 03 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.12.5-1 6.12.6-1 |
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Reference Links
- https://git.kernel.org/stable/c/12783c0b9e2c7915a50d5ec829630ff2da50472c
- https://git.kernel.org/stable/c/465b545d1d7ef282192ddd4439b08279bdb13f6f
- https://git.kernel.org/stable/c/ed85777c640cf9e6920bb1b60ed8cd48e1f4d873
- https://launchpad.net/bugs/cve/CVE-2024-26716
- https://git.kernel.org/linus/12783c0b9e2c7915a50d5ec829630ff2da50472c
- https://security-tracker.debian.org/tracker/CVE-2024-26716
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26716
- https://nvd.nist.gov/vuln/detail/CVE-2024-26716
- https://ubuntu.com/security/CVE-2024-26716
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