Answer in brief
CVE-2026-46138 records a High severity (CVSS 8.1) vulnerability in Bluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a0bfde167b506423111ddb8cd71930497a40fc54 <6cb7f67bc28da787499291a562d49a084d9c90cd || >=a0bfde167b506423111ddb8cd71930497a40fc54 <22559ad7654f61727fc270ee4893da9f4b70cf17 || >=a0bfde167b506423111ddb8cd71930497a40fc54 <77981a507aa0fc001dc37f0dd6631dd2042fed17 || >=a0bfde167b506423111ddb8cd71930497a40fc54 <665da0baaf0396f9ed3c86ccb3955dcd0b73e774 || >=a0bfde167b506423111ddb8cd71930497a40fc54 <5ddb8014261137cadaf83ab5617a588d80a22586 || b475c1109251e30ec21fb574d72a1c71a4ab0039 || 2ccde10127447c1a5caad8469fede945bdb62fdf || >=6.4.16 <6.5 || >=6.5.3 <6.6 | 6cb7f67bc28da787499291a562d49a084d9c90cd, 22559ad7654f61727fc270ee4893da9f4b70cf17, 77981a507aa0fc001dc37f0dd6631dd2042fed17, 665da0baaf0396f9ed3c86ccb3955dcd0b73e774, 5ddb8014261137cadaf83ab5617a588d80a22586, 6.5, 6.6 |
| Linux/Linuxgeneric | 6.6 | Not reported |
Published upstream
May 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-46138 records a High severity (CVSS 8.1) vulnerability in Bluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a0bfde167b506423111ddb8cd71930497a40fc54 <6cb7f67bc28da787499291a562d49a084d9c90cd || >=a0bfde167b506423111ddb8cd71930497a40fc54 <22559ad7654f61727fc270ee4893da9f4b70cf17 || >=a0bfde167b506423111ddb8cd71930497a40fc54 <77981a507aa0fc001dc37f0dd6631dd2042fed17 || >=a0bfde167b506423111ddb8cd71930497a40fc54 <665da0baaf0396f9ed3c86ccb3955dcd0b73e774 || >=a0bfde167b506423111ddb8cd71930497a40fc54 <5ddb8014261137cadaf83ab5617a588d80a22586 || b475c1109251e30ec21fb574d72a1c71a4ab0039 || 2ccde10127447c1a5caad8469fede945bdb62fdf || >=6.4.16 <6.5 || >=6.5.3 <6.6 | 6cb7f67bc28da787499291a562d49a084d9c90cd, 22559ad7654f61727fc270ee4893da9f4b70cf17, 77981a507aa0fc001dc37f0dd6631dd2042fed17, 665da0baaf0396f9ed3c86ccb3955dcd0b73e774, 5ddb8014261137cadaf83ab5617a588d80a22586, 6.5, 6.6 |
| Linux/Linuxgeneric | 6.6 | Not reported |
Published upstream
May 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
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.
Quoted source text, attributed separately from HOL analysis.