Vulnerability 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
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.8, < 4.9.301 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/175db196e45d6f0e6047eccd09c8ba55465eb131Patch
- https://git.kernel.org/stable/c/1f1788616157b0222b0c2153828b475d95e374a7Patch
- https://git.kernel.org/stable/c/3c7e5943553594f68bbc070683db6bb6f6e9e78ePatch
- https://git.kernel.org/stable/c/59ff7514f8c56f166aadca49bcecfa028e0ad50fPatch
- https://git.kernel.org/stable/c/9aa422ad326634b76309e8ff342c246800621216Patch
- https://git.kernel.org/stable/c/d692e3406e052dbf9f6d9da0cba36cb763272529Patch
- https://git.kernel.org/stable/c/f1af11edd08dd8376f7a84487cbb0ea8203e3a1dPatch
- https://git.kernel.org/stable/c/fde4ddeadd099bf9fbb9ccbee8e1b5c20d530a2dPatch
- https://git.kernel.org/stable/c/175db196e45d6f0e6047eccd09c8ba55465eb131Patch
- https://git.kernel.org/stable/c/1f1788616157b0222b0c2153828b475d95e374a7Patch
- https://git.kernel.org/stable/c/3c7e5943553594f68bbc070683db6bb6f6e9e78ePatch
- https://git.kernel.org/stable/c/59ff7514f8c56f166aadca49bcecfa028e0ad50fPatch
- https://git.kernel.org/stable/c/9aa422ad326634b76309e8ff342c246800621216Patch
- https://git.kernel.org/stable/c/d692e3406e052dbf9f6d9da0cba36cb763272529Patch
- https://git.kernel.org/stable/c/f1af11edd08dd8376f7a84487cbb0ea8203e3a1dPatch
FAQ
What is CVE-2022-48711?
CVE-2022-48711 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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...
How severe is CVE-2022-48711?
CVE-2022-48711 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2022-48711?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.