Skip to content
CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2022-48711

tipc: improve size validations for received domain records

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Linux

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 35c55c9877f8de0ab129fa1a309271d0ecc868b9 to < 175db196e45d6f0e6047eccd09c8ba55465eb131affected
  • 35c55c9877f8de0ab129fa1a309271d0ecc868b9 to < fde4ddeadd099bf9fbb9ccbee8e1b5c20d530a2daffected
  • 35c55c9877f8de0ab129fa1a309271d0ecc868b9 to < f1af11edd08dd8376f7a84487cbb0ea8203e3a1daffected
  • 35c55c9877f8de0ab129fa1a309271d0ecc868b9 to < d692e3406e052dbf9f6d9da0cba36cb763272529affected
  • 35c55c9877f8de0ab129fa1a309271d0ecc868b9 to < 3c7e5943553594f68bbc070683db6bb6f6e9e78eaffected
  • 35c55c9877f8de0ab129fa1a309271d0ecc868b9 to < 1f1788616157b0222b0c2153828b475d95e374a7affected
  • 35c55c9877f8de0ab129fa1a309271d0ecc868b9 to < 59ff7514f8c56f166aadca49bcecfa028e0ad50faffected
  • 35c55c9877f8de0ab129fa1a309271d0ecc868b9 to < 9aa422ad326634b76309e8ff342c246800621216affected

Linux Linux

Default version status: affected

  • 4.8affected
  • 0 to < 4.8unaffected
  • 4.9.301 to ≤ 4.9.*unaffected
  • 4.14.266 to ≤ 4.14.*unaffected
  • 4.19.229 to ≤ 4.19.*unaffected
  • 5.4.179 to ≤ 5.4.*unaffected
  • 5.10.100 to ≤ 5.10.*unaffected
  • 5.15.23 to ≤ 5.15.*unaffected
  • 5.16.9 to ≤ 5.16.*unaffected
  • 5.17 to ≤ *unaffected

References