CVE-2023-52898

Summary

In the Linux kernel, the following vulnerability has been resolved:

xhci: Fix null pointer dereference when host dies

Make sure xhci_free_dev() and xhci_kill_endpoint_urbs() do not race and cause null pointer dereference when host suddenly dies.

Usb core may call xhci_free_dev() which frees the xhci->devs[slot_id] virt device at the same time that xhci_kill_endpoint_urbs() tries to loop through all the device's endpoints, checking if there are any cancelled urbs left to give back.

hold the xhci spinlock while freeing the virt device

Affected Software

VendorProductVersion RangeStatus
LinuxLinux11ec7588a10d4bc2e1e385ac565d2166d375fba1 < 6fac4b5cecb3928a0a81069aaa815a2edc8dd5a1affected
LinuxLinux11ec7588a10d4bc2e1e385ac565d2166d375fba1 < 133b902378e4acbd824c29dd0d48570ad596e368affected
LinuxLinux11ec7588a10d4bc2e1e385ac565d2166d375fba1 < 081105213ff6f661c114781d469233c7d0e09c2eaffected
LinuxLinux11ec7588a10d4bc2e1e385ac565d2166d375fba1 < c462ac871f49753eca86bb960f573b993976a5eaaffected
LinuxLinux11ec7588a10d4bc2e1e385ac565d2166d375fba1 < ea2ee5e9991caf74e0604f994c1831a5867055b2affected
LinuxLinux11ec7588a10d4bc2e1e385ac565d2166d375fba1 < a2bc47c43e70cf904b1af49f76d572326c08bca7affected
LinuxLinux4.15affected
LinuxLinux0 < 4.15unaffected
LinuxLinux4.19.271 <= 4.19.*unaffected
LinuxLinux5.4.230 <= 5.4.*unaffected
LinuxLinux5.10.165 <= 5.10.*unaffected
LinuxLinux5.15.90 <= 5.15.*unaffected
LinuxLinux6.1.8 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References