CVE-2024-38556

Summary

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

net/mlx5: Add a timeout to acquire the command queue semaphore

Prevent forced completion handling on an entry that has not yet been assigned an index, causing an out of bounds access on idx = -22. Instead of waiting indefinitely for the sem, blocking flow now waits for index to be allocated or a sem acquisition timeout before beginning the timer for FW completion.

Kernel log example: mlx5_core 0000:06:00.0: wait_func_handle_exec_timeout:1128:(pid 185911): cmd[-22]: CREATE_UCTX(0xa04) No done completion

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8e715cd613a1e872b9d918e912d90b399785761a < 4baae687a20ef2b82fde12de3c04461e6f2521d6affected
LinuxLinux8e715cd613a1e872b9d918e912d90b399785761a < f9caccdd42e999b74303c9b0643300073ed5d319affected
LinuxLinux8e715cd613a1e872b9d918e912d90b399785761a < 2d0962d05c93de391ce85f6e764df895f47c8918affected
LinuxLinux8e715cd613a1e872b9d918e912d90b399785761a < 94024332a129c6e4275569d85c0c1bfb2ae2d71baffected
LinuxLinux8e715cd613a1e872b9d918e912d90b399785761a < 485d65e1357123a697c591a5aeb773994b247ad7affected
LinuxLinux74dd45122b84479eee50bd0956ae8bc5799c9f8aaffected
LinuxLinuxe801f81cee3c8901f52ee48c6329802b28fbb49caffected
LinuxLinuxd73d81447c6651904dd4a9e3fd88651ff174c1b7affected
LinuxLinux4646175c19fd019b773444a11ff62748eb83745baffected
LinuxLinux5.4.174 < 5.5affected
LinuxLinux5.10.94 < 5.11affected
LinuxLinux5.15.17 < 5.16affected
LinuxLinux5.16.3 < 5.17affected
LinuxLinux5.17affected
LinuxLinux0 < 5.17unaffected
LinuxLinux6.1.93 <= 6.1.*unaffected
LinuxLinux6.6.33 <= 6.6.*unaffected
LinuxLinux6.8.12 <= 6.8.*unaffected
LinuxLinux6.9.3 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References