Bug 2379168 (CVE-2025-38315)

Summary: CVE-2025-38315 kernel: Bluetooth: btintel: Check dsbr size from EFI variable
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-07-10 08:01:16 UTC 
In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: btintel: Check dsbr size from EFI variable

Since the size of struct btintel_dsbr is already known, we can just
start there instead of querying the EFI variable size. If the final
result doesn't match what we expect also fail. This fixes a stack buffer
overflow when the EFI variable is larger than struct btintel_dsbr.
Comment 1 Avinash Hanwate 2025-07-11 13:06:52 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025071015-CVE-2025-38315-ccfc@gregkh/T