CVE-2026-45836
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Bluetooth Null Pointer Dereference in Linux Kernel

Publication date: 2026-05-26

Last updated on: 2026-06-01

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_get_sndtimeo_cb() Add the same NULL guard already present in l2cap_sock_resume_cb() and l2cap_sock_ready_cb().
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Meta Information
Published
2026-05-26
Last Modified
2026-06-01
Generated
2026-06-16
AI Q&A
2026-05-26
EPSS Evaluated
2026-06-14
NVD
CVE-2026-45836
EUVD
EUVD-2026-31858
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 is a null pointer dereference issue in the Linux kernel's Bluetooth L2CAP component. Specifically, it occurs in the function l2cap_sock_get_sndtimeo_cb(). The fix involves adding a NULL pointer check similar to those already present in related functions l2cap_sock_resume_cb() and l2cap_sock_ready_cb().

Impact Analysis

A null pointer dereference vulnerability can cause the affected system or component to crash or behave unpredictably, potentially leading to denial of service. In this case, exploitation could disrupt Bluetooth functionality in the Linux kernel.

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