CVE-2024-50239

Summary

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

phy: qcom: qmp-usb-legacy: 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-usb-legacy 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
LinuxLinuxe464a3180a43b6596bd267f9f274e1793bfb8150 < 7e8066811a2c43fbb5f53c2c26d389e4bab9da34affected
LinuxLinuxe464a3180a43b6596bd267f9f274e1793bfb8150 < b1cffd00daa9cf499b49a0da698eff5032914f6eaffected
LinuxLinuxe464a3180a43b6596bd267f9f274e1793bfb8150 < 29240130ab77c80bea1464317ae2a5fd29c16a0caffected
LinuxLinux6.6affected
LinuxLinux0 < 6.6unaffected
LinuxLinux6.6.60 <= 6.6.*unaffected
LinuxLinux6.11.7 <= 6.11.*unaffected
LinuxLinux6.12 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References