CVE-2026-46198
Analyzed Analyzed - Analysis Complete
Integer Overflow in Linux Kernel batman-adv Module

Publication date: 2026-05-28

Last updated on: 2026-06-10

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix integer overflow on buff_pos Fixing an integer overflow present in batadv_iv_ogm_send_to_if. The size check is done using the int type in batadv_iv_ogm_aggr_packet whereas the buff_pos variable uses the s16 type. This could lead to an out-of-bound read.
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Meta Information
Published
2026-05-28
Last Modified
2026-06-10
Generated
2026-06-17
AI Q&A
2026-05-28
EPSS Evaluated
2026-06-16
NVD
EUVD
Affected Vendors & Products
Showing 10 associated CPEs
Vendor Product Version / Range
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel From 5.16 (inc) to 6.1.175 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.209 (exc)
linux linux_kernel From 2.6.38 (inc) to 5.10.258 (exc)
linux linux_kernel From 6.2 (inc) to 6.6.140 (exc)
linux linux_kernel From 6.13 (inc) to 6.18.32 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.90 (exc)
linux linux_kernel From 6.19 (inc) to 7.0.9 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-190 The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
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Executive Summary

This vulnerability is an integer overflow in the Linux kernel component batman-adv, specifically in the function batadv_iv_ogm_send_to_if. The issue arises because a size check uses an int type, while the buff_pos variable uses a signed 16-bit integer (s16) type. This mismatch can cause an integer overflow, potentially leading to an out-of-bound read.

Impact Analysis

The integer overflow can cause an out-of-bound read in the Linux kernel's batman-adv module. This may lead to unexpected behavior such as crashes, data corruption, or potential security risks like information disclosure or privilege escalation, depending on how the out-of-bound read is exploited.

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