CVE-2026-53253: Bluetooth: bnep: reject short frames before parsing
Bluetooth: bnep: reject short frames before parsing
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.143.1-1 - Configuration
Ensure BNEP rejects short frames before pulling/parsing fields in bnep_rx_frame(), including rejecting control packets with an empty control payload and validating that the UUID-size byte and required setup/service UUID bytes are present before dereferencing.
Bluetooth BNEP (net/bluetooth/bnep) short-frame validation = reject short BNEP SDUs before parsing
Event History
Frequently Asked Questions
What is the severity of CVE-2026-53253?
The severity of CVE-2026-53253 is rated at 33.
How do I fix CVE-2026-53253?
To fix CVE-2026-53253, update your Linux kernel to the latest version that contains the patch.
Who is affected by CVE-2026-53253?
CVE-2026-53253 affects users of the Linux kernel that utilize Bluetooth BNEP protocol.
What types of attacks can CVE-2026-53253 enable?
CVE-2026-53253 can potentially allow an attacker to send malformed BNEP short frames that could lead to undefined behavior.
When was CVE-2026-53253 published?
CVE-2026-53253 was published on June 25, 2026.