CVE-2024-50238

Summary

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

phy: qcom: qmp-usbc: fix NULL-deref on runtime suspend

Commit 413db06c05e7 ("phy: qcom-qmp-usb: clean up probe initialisation") removed most users of the platform device driver data from the qcom-qmp-usb driver, but mistakenly also removed the initialisation despite the data still being used in the runtime PM callbacks. This bug was later reproduced when the driver was copied to create the qmp-usbc driver.

Restore the driver data initialisation at probe to avoid a NULL-pointer dereference on runtime suspend.

Apparently no one uses runtime PM, which currently needs to be enabled manually through sysfs, with these drivers.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux19281571a4d5b6049dad9318db081af48818b1d2 < c7086dc0539b1b2b61c8c735186698bca4858246affected
LinuxLinux19281571a4d5b6049dad9318db081af48818b1d2 < 34c21f94fa1e147a19b54b6adf0c93a623b70dd8affected
LinuxLinuxbdb35fcff34af08fc7a7cb92f99ff1442e975cb1affected
LinuxLinux6.8.2 < 6.9affected
LinuxLinux6.9affected
LinuxLinux0 < 6.9unaffected
LinuxLinux6.11.7 <= 6.11.*unaffected
LinuxLinux6.12 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References