CVE-2022-48711

Summary

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

tipc: improve size validations for received domain records

The function tipc_mon_rcv() allows a node to receive and process domain_record structs from peer nodes to track their views of the network topology.

This patch verifies that the number of members in a received domain record does not exceed the limit defined by MAX_MON_DOMAIN, something that may otherwise lead to a stack overflow.

tipc_mon_rcv() is called from the function tipc_link_proto_rcv(), where we are reading a 32 bit message data length field into a uint16. To avert any risk of bit overflow, we add an extra sanity check for this in that function. We cannot see that happen with the current code, but future designers being unaware of this risk, may introduce it by allowing delivery of very large (> 64k) sk buffers from the bearer layer. This potential problem was identified by Eric Dumazet.

This fixes CVE-2022-0435

Affected Software

VendorProductVersion RangeStatus
LinuxLinux35c55c9877f8de0ab129fa1a309271d0ecc868b9 < 175db196e45d6f0e6047eccd09c8ba55465eb131affected
LinuxLinux35c55c9877f8de0ab129fa1a309271d0ecc868b9 < fde4ddeadd099bf9fbb9ccbee8e1b5c20d530a2daffected
LinuxLinux35c55c9877f8de0ab129fa1a309271d0ecc868b9 < f1af11edd08dd8376f7a84487cbb0ea8203e3a1daffected
LinuxLinux35c55c9877f8de0ab129fa1a309271d0ecc868b9 < d692e3406e052dbf9f6d9da0cba36cb763272529affected
LinuxLinux35c55c9877f8de0ab129fa1a309271d0ecc868b9 < 3c7e5943553594f68bbc070683db6bb6f6e9e78eaffected
LinuxLinux35c55c9877f8de0ab129fa1a309271d0ecc868b9 < 1f1788616157b0222b0c2153828b475d95e374a7affected
LinuxLinux35c55c9877f8de0ab129fa1a309271d0ecc868b9 < 59ff7514f8c56f166aadca49bcecfa028e0ad50faffected
LinuxLinux35c55c9877f8de0ab129fa1a309271d0ecc868b9 < 9aa422ad326634b76309e8ff342c246800621216affected
LinuxLinux4.8affected
LinuxLinux0 < 4.8unaffected
LinuxLinux4.9.301 <= 4.9.*unaffected
LinuxLinux4.14.266 <= 4.14.*unaffected
LinuxLinux4.19.229 <= 4.19.*unaffected
LinuxLinux5.4.179 <= 5.4.*unaffected
LinuxLinux5.10.100 <= 5.10.*unaffected
LinuxLinux5.15.23 <= 5.15.*unaffected
LinuxLinux5.16.9 <= 5.16.*unaffected
LinuxLinux5.17 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References