Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt hci_le_create_big_complete_evt() iterates over BT_BOUND connections for a BIG handle using a while loop, accessing ev->bis_handle[i++] on each iteration. However, there is no check that i stays within ev->num_bis before the array access. When a controller sends a LE_Create_BIG_Complete event with fewer bis_handle entries than there are BT_BOUND connections for that BIG, or with num_bis=0, the loop reads beyond the valid bis_handle[] flex array into adjacent heap memory. Since the out-of-bounds values typically exceed HCI_CONN_HANDLE_MAX (0x0EFF), hci_conn_set_handle() rejects them and the connection remains in BT_BOUND state. The same connection is then found again by hci_conn_hash_lookup_big_state(), creating an infinite loop with hci_dev_lock held. Fix this by terminating the BIG if in case not all BIS could be setup properly.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected a0bfde167b506423111ddb8cd71930497a40fc54 before 6cb7f67bc28da787499291a562d49a084d9c90cd; affected a0bfde167b506423111ddb8cd71930497a40fc54 before 22559ad7654f61727fc270ee4893da9f4b70cf17; affected a0bfde167b506423111ddb8cd71930497a40fc54 before 77981a507aa0fc001dc37f0dd6631dd2042fed17; affected a0bfde167b506423111ddb8cd71930497a40fc54 before 665da0baaf0396f9ed3c86ccb3955dcd0b73e774; affected a0bfde167b506423111ddb8cd71930497a40fc54 before 5ddb8014261137cadaf83ab5617a588d80a22586; affected b475c1109251e30ec21fb574d72a1c71a4ab0039; affected 2ccde10127447c1a5caad8469fede945bdb62fdf; affected 6.4.16 before 6.5; affected 6.5.3 before 6.6 |
| Linux / Linux | affected 6.6; unaffected 0 before 6.6; unaffected 6.6.140 through 6.6.*; unaffected 6.12.88 through 6.12.*; unaffected 6.18.30 through 6.18.*; unaffected 7.0.7 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6cb7f67bc28da787499291a562d49a084d9c90cd
- https://git.kernel.org/stable/c/22559ad7654f61727fc270ee4893da9f4b70cf17
- https://git.kernel.org/stable/c/77981a507aa0fc001dc37f0dd6631dd2042fed17
- https://git.kernel.org/stable/c/665da0baaf0396f9ed3c86ccb3955dcd0b73e774
- https://git.kernel.org/stable/c/5ddb8014261137cadaf83ab5617a588d80a22586
ADP enrichment
No English description supplied.
No references supplied.