CVE-2024-26716

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux83cb2604f641cecadc275ca18adbba4bf262320f < ed85777c640cf9e6920bb1b60ed8cd48e1f4d873affected
LinuxLinux83cb2604f641cecadc275ca18adbba4bf262320f < 465b545d1d7ef282192ddd4439b08279bdb13f6faffected
LinuxLinux83cb2604f641cecadc275ca18adbba4bf262320f < 12783c0b9e2c7915a50d5ec829630ff2da50472caffected
LinuxLinux6.5affected
LinuxLinux0 < 6.5unaffected
LinuxLinux6.6.18 <= 6.6.*unaffected
LinuxLinux6.7.6 <= 6.7.*unaffected
LinuxLinux6.8 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References