CVE-2026-98097
Received Received - Intake

Memory Corruption in Linux Kernel TIPC Protocol

Publication date: 2026-09-25

Last updated on: 2026-09-25

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: tipc: Dont send random pad bytes in RESET/ACTIVATE messages The interface name is passed in a fixed length (TIPC_MAX_IF_NAME) buffer. Replace the strcpy(data, l->if_name) with memcpy() so that the pad bytes are actually written (l->if_name[] is zero padded) rather than sending random bytes from the skb to the remote system. Replace two other strcpy() with strscpy().

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Meta Information

Published
2026-09-25
Last Modified
2026-09-25
Generated
2026-09-25
AI Q&A
2026-09-25
EPSS Evaluated
N/A
NVD
CVE-2026-98097
EUVD
EUVD-2026-86927

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves sending unintended data in network messages. When a system sends RESET or ACTIVATE messages, it uses a fixed-length buffer for the interface name. The code previously copied the name using strcpy, which could include random leftover bytes from memory. This fix replaces strcpy with memcpy to ensure only the intended interface name and proper padding are sent, preventing exposure of unrelated data.

Detection Guidance

This vulnerability is specific to the Linux kernel's TIPC module and involves improper handling of interface names in RESET/ACTIVATE messages. Detection requires checking the kernel version and TIPC module configuration. Use commands like 'uname -a' to check kernel version and 'lsmod | grep tipc' to verify if TIPC is loaded.

Impact Analysis

If exploited, this flaw could allow an attacker on the same network to intercept or manipulate messages by sending malformed data. This might lead to unauthorized access, data leaks, or service disruptions in systems using the affected Linux kernel components.

Mitigation Strategies

Apply the latest kernel patches from your Linux distribution to update the TIPC module. If TIPC is not in use, consider unloading the module with 'rmmod tipc'. Monitor vendor advisories for specific patch availability.

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