CVE-2022-48711 tipc: improve size validations for received domain records
A stack overflow in the Linux kernel TIPC module allows attackers to cause denial of service or execute arbitrary code via crafted domain records.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-48711?
CVE-2022-48711 is a critical memory corruption vulnerability in Linux kernel, published on 20 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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
Weakness: CWE-787
Which versions are affected by CVE-2022-48711?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-48711?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-48711 being exploited?
There is no known exploitation of CVE-2022-48711 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-48711, GHSA-xwqp-6c5w-h6q9, UBUNTU-CVE-2022-48711.