Bug 2356591 (CVE-2025-21936)

Summary: CVE-2025-21936 kernel: Bluetooth: Add check for mgmt_alloc_skb() in mgmt_device_connected()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-04-01 16:01:26 UTC 
In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: Add check for mgmt_alloc_skb() in mgmt_device_connected()

Add check for the return value of mgmt_alloc_skb() in
mgmt_device_connected() to prevent null pointer dereference.
Comment 1 Robb Gatica 2025-04-02 05:25:32 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025040134-CVE-2025-21936-fe95@gregkh/T