CVE-2022-48711

MEDIUM
Published Jun 20, 2024 Modified Sep 17, 2025 CWE-787

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

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CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/175db196e45d6f0e6047eccd09c8ba55465eb131 https://git.kernel.org/stable/c/1f1788616157b0222b0c2153828b475d95e374a7 https://git.kernel.org/stable/c/3c7e5943553594f68bbc070683db6bb6f6e9e78e https://git.kernel.org/stable/c/59ff7514f8c56f166aadca49bcecfa028e0ad50f https://git.kernel.org/stable/c/9aa422ad326634b76309e8ff342c246800621216 https://git.kernel.org/stable/c/d692e3406e052dbf9f6d9da0cba36cb763272529 https://git.kernel.org/stable/c/f1af11edd08dd8376f7a84487cbb0ea8203e3a1d https://git.kernel.org/stable/c/fde4ddeadd099bf9fbb9ccbee8e1b5c20d530a2d https://git.kernel.org/stable/c/175db196e45d6f0e6047eccd09c8ba55465eb131 https://git.kernel.org/stable/c/1f1788616157b0222b0c2153828b475d95e374a7 https://git.kernel.org/stable/c/3c7e5943553594f68bbc070683db6bb6f6e9e78e https://git.kernel.org/stable/c/59ff7514f8c56f166aadca49bcecfa028e0ad50f https://git.kernel.org/stable/c/9aa422ad326634b76309e8ff342c246800621216 https://git.kernel.org/stable/c/d692e3406e052dbf9f6d9da0cba36cb763272529 https://git.kernel.org/stable/c/f1af11edd08dd8376f7a84487cbb0ea8203e3a1d https://git.kernel.org/stable/c/fde4ddeadd099bf9fbb9ccbee8e1b5c20d530a2d

Frequently Asked Questions

What is CVE-2022-48711? +
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 It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2022-48711? +
CVE-2022-48711 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2022-48711? +
CVE-2022-48711 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2022-48711? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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