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CVE-2026-45834— Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb()

AI Predicted 4.4 Difficulty: Moderate

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 12

VendorProductVersion RangeStatus
LinuxLinux89bc500e41fc5b48e0573e6b0d927fc97b8951dc< 5105f3e6b2df619c635b5f6a49fac131a36c7952affected
89bc500e41fc5b48e0573e6b0d927fc97b8951dc< c88c185ae0a1067823661b220aeea613df2c127baffected
89bc500e41fc5b48e0573e6b0d927fc97b8951dc< 1810e42ff6716f320c7269d5850eca48b07b7427affected
89bc500e41fc5b48e0573e6b0d927fc97b8951dc< a2dcf1a61d056aef15b63c6eae9441344d624389affected
89bc500e41fc5b48e0573e6b0d927fc97b8951dc< 2ff1a41a912de8517b4482e946dd951b7d80edbfaffected
3.1affected
< 3.1unaffected
6.6.140≤ 6.6.*unaffected
… +4 more rows
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I. Basic Information for CVE-2026-45834

Vulnerability Information
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Vulnerability Title
Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb() Add the same NULL guard already present in l2cap_sock_resume_cb() and l2cap_sock_ready_cb().
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 89bc500e41fc5b48e0573e6b0d927fc97b8951dc ~ 5105f3e6b2df619c635b5f6a49fac131a36c7952 -
LinuxLinux 3.1 -

II. Public POCs for CVE-2026-45834

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III. Intelligence Information for CVE-2026-45834

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Patches & Fixes for CVE-2026-45834 (5)

Same Patch Batch · Linux · 2026-05-26 · 3 CVEs total

CVE-2026-45836Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_get_sndtimeo_cb()
CVE-2026-45835Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_new_connection_cb()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-45834

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