CVE-2025-40301
Published: Dec 8, 2025
Modified: May 11, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: validate skb length for unknown CC opcode In hci_cmd_complete_evt(), if the command complete event has an unknown opcode, we assume the first byte of the remaining skb->data contains the return status. However, parameter data has previously been pulled in hci_event_func(), which may leave the skb empty. If so, using skb->data[0] for the return status uses un-init memory. The fix is to check skb->len before using skb->data.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected afcb3369f46ed5dc883a7b92f2dd1e264d79d388 - < fea895de78d3bb2f0c09db9f10b18f8121b15759affected afcb3369f46ed5dc883a7b92f2dd1e264d79d388 - < 779f83a91d4f1bf5ddfeaf528420cbb6dbf03fa8affected afcb3369f46ed5dc883a7b92f2dd1e264d79d388 - < cf2c2acec1cf456c3d11c11a7589e886a0f963a9affected afcb3369f46ed5dc883a7b92f2dd1e264d79d388 - < 1a0ddaaf97405dbd11d4cb5a961a3f82400e8a50affected afcb3369f46ed5dc883a7b92f2dd1e264d79d388 - < 5c5f1f64681cc889d9b13e4a61285e9e029d6ab5 |
Linux | Linux | affected 6.1unaffected 0 - < 6.1unaffected 6.1.159 - <= 6.1.*unaffected 6.6.117 - <= 6.6.*unaffected 6.12.58 - <= 6.12.*+2 more versions |
References
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