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

AI Predicted 4.3 Difficulty: Moderate EPSS 0.02% · P5

Possible ATT&CK Techniques 1AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 12

VendorProductVersion RangeStatus
LinuxLinux80808e431e1ef25856457de82ce141bed6a6313a< ab77c8bc30269bee15d917059a66bea48909f5f0affected
80808e431e1ef25856457de82ce141bed6a6313a< bc3bb9f40da8e53896abc2d29c6d0c6686fe4ab9affected
80808e431e1ef25856457de82ce141bed6a6313a< 741e6024e31587b0c021b6616a9e428a4ea0b64aaffected
80808e431e1ef25856457de82ce141bed6a6313a< 76083fb80f5a38ac13326b2d810f66bd07771eeaaffected
80808e431e1ef25856457de82ce141bed6a6313a< 0a120d96166301d7a95be75b52f843837dbd1219affected
3.1affected
< 3.1unaffected
6.6.140≤ 6.6.*unaffected
… +4 more rows
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I. Basic Information for CVE-2026-45835

Vulnerability Information
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Vulnerability Title
Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_new_connection_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_new_connection_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)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于蓝牙L2CAP协议中l2cap_sock_new_connection_cb函数缺少空指针检查，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 80808e431e1ef25856457de82ce141bed6a6313a ~ ab77c8bc30269bee15d917059a66bea48909f5f0 -
LinuxLinux 3.1 -

II. Public POCs for CVE-2026-45835

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III. Intelligence Information for CVE-2026-45835

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Patches & Fixes for CVE-2026-45835 (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-2026-45834Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_change_cb()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-45835

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