CVE-2026-23395 - Bluetooth: L2CAP: Fix accepting multiple L2CAP_ECRED_CONN_REQ

CVE-2026-23395 - Bluetooth: L2CAP: Fix accepting multiple L2CAP_ECRED_CONN_REQ

https://cvefeed.io/rssfeed/latest.atom / Wed, 03/25/2026 - 17:08
CVE ID :CVE-2026-23395
Published : March 25, 2026, 11:16 a.m. | 3 hours, 46 minutes ago
Description :In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix accepting multiple L2CAP_ECRED_CONN_REQ Currently the code attempts to accept requests regardless of the command identifier which may cause multiple requests to be marked as pending (FLAG_DEFER_SETUP) which can cause more than L2CAP_ECRED_MAX_CID(5) to be allocated in l2cap_ecred_rsp_defer causing an overflow. The spec is quite clear that the same identifier shall not be used on subsequent requests: 'Within each signaling channel a different Identifier shall be used for each successive request or indication.' https://www.bluetooth.com/wp-content/uploads/Files/Specification/HTML/Core-62/out/en/host/logical-link-control-and-adaptation-protocol-specification.html#UUID-32a25a06-4aa4-c6c7-77c5-dcfe3682355d So this attempts to check if there are any channels pending with the same identifier and rejects if any are found.
Severity: 0.0 | NA
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