CVE-2026-52931
Description
A flaw was found in the batman-adv tp_meter module of the Linux kernel. A remote attacker could exploit this vulnerability by sending a specially crafted acknowledgment (ACK) packet to a node configured as a receiver in an ongoing tp_meter session. This could lead to the use of uninitialized sender variables, resulting in undefined behavior and potentially a denial of service.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
If the uninitialized pointer is used in a read operation, an attacker might be able to read sensitive portions of memory.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
If the uninitialized pointer references a memory location that is not accessible to the product, or points to a location that is "malformed" (such as NULL) or larger than expected by a read or write operation, then a crash may occur.
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands
If the uninitialized pointer is used in a function call, or points to unexpected data in a write operation, then code execution may be possible.
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
