CVE-2022-48938

Summary

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

CDC-NCM: avoid overflow in sanity checking

A broken device may give an extreme offset like 0xFFF0 and a reasonable length for a fragment. In the sanity check as formulated now, this will create an integer overflow, defeating the sanity check. Both offset and offset + len need to be checked in such a manner that no overflow can occur. And those quantities should be unsigned.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux4ca8b8855264cf1439cdab3da7049bd1e3c2a9e6 < a612395c7631918e0e10ea48b9ce5ab4340f26a6affected
LinuxLinuxa270ca35a9499b58366d696d3290eaa4697a42db < 9957fbf34f52a4d8945d1bf39aae400ef9a11246affected
LinuxLinux0fa81b304a7973a499f844176ca031109487dd31 < 69560efa001397ebb8dc1c3e6a3ce00302bb9f7faffected
LinuxLinux0fa81b304a7973a499f844176ca031109487dd31 < 49909c9f8458cacb5b241106cba65aba5a6d8f4caffected
LinuxLinux0fa81b304a7973a499f844176ca031109487dd31 < 7b737e47b87589031f0d4657f6d7b0b770474925affected
LinuxLinux0fa81b304a7973a499f844176ca031109487dd31 < 8d2b1a1ec9f559d30b724877da4ce592edc41fdcaffected
LinuxLinux8cf7db86a8984ffa3a3388a8df12bc0aa4c79bd7affected
LinuxLinux4.19.285 < 4.19.323affected
LinuxLinux5.4.245 < 5.4.285affected
LinuxLinux4.14.317 < 4.15affected
LinuxLinux5.7affected
LinuxLinux0 < 5.7unaffected
LinuxLinux4.19.323 <= 4.19.*unaffected
LinuxLinux5.4.285 <= 5.4.*unaffected
LinuxLinux5.10.103 <= 5.10.*unaffected
LinuxLinux5.15.26 <= 5.15.*unaffected
LinuxLinux5.16.12 <= 5.16.*unaffected
LinuxLinux5.17 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References