Answer in brief
CVE-2026-74541 records a Unknown severity vulnerability in Bluetooth: ISO: clear iso_data always when detaching conn from hcon. 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.
A CVSS score is not reported in the current record. 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 | >=fbdc4bc47268953c80853489f696e02d61f9a2c6 <cc1d39946d62bc568551dfb81149724de1e91338 || >=fbdc4bc47268953c80853489f696e02d61f9a2c6 <7b51a9c25e9698b64df9f2218f10eecf7dc7e2d0 || >=fbdc4bc47268953c80853489f696e02d61f9a2c6 <63c0f396a18b767eb28e895eb95bbdce6c172c59 || >=fbdc4bc47268953c80853489f696e02d61f9a2c6 <69a4a7b162b3db6ac337e3094cdee38f24d42ff7 || >=fbdc4bc47268953c80853489f696e02d61f9a2c6 <d57e506f6a1e3929611340fae87c1e4823f4d85c || c03a10bd5b6ccb22921e04bcddc987410df7e7a9 || >=6.5.12 <6.6 | cc1d39946d62bc568551dfb81149724de1e91338, 7b51a9c25e9698b64df9f2218f10eecf7dc7e2d0, 63c0f396a18b767eb28e895eb95bbdce6c172c59, 69a4a7b162b3db6ac337e3094cdee38f24d42ff7, d57e506f6a1e3929611340fae87c1e4823f4d85c, 6.6 |
| Linux/Linuxgeneric | 6.6 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: clear iso_data always when detaching conn from hcon When setting conn->hcon = NULL, also conn->hcon->iso_data = NULL is necessary, otherwise later iso_conn_free() will UAF. Fix clearing of iso_data in iso_sock_disconn() Fixes KASAN: slab-use-after-free in iso_conn_hold_unless_zero on iso_sock_release() followed by hci_abort_conn_sync().
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-74541 records a Unknown severity vulnerability in Bluetooth: ISO: clear iso_data always when detaching conn from hcon. 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.
A CVSS score is not reported in the current record. 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 | >=fbdc4bc47268953c80853489f696e02d61f9a2c6 <cc1d39946d62bc568551dfb81149724de1e91338 || >=fbdc4bc47268953c80853489f696e02d61f9a2c6 <7b51a9c25e9698b64df9f2218f10eecf7dc7e2d0 || >=fbdc4bc47268953c80853489f696e02d61f9a2c6 <63c0f396a18b767eb28e895eb95bbdce6c172c59 || >=fbdc4bc47268953c80853489f696e02d61f9a2c6 <69a4a7b162b3db6ac337e3094cdee38f24d42ff7 || >=fbdc4bc47268953c80853489f696e02d61f9a2c6 <d57e506f6a1e3929611340fae87c1e4823f4d85c || c03a10bd5b6ccb22921e04bcddc987410df7e7a9 || >=6.5.12 <6.6 | cc1d39946d62bc568551dfb81149724de1e91338, 7b51a9c25e9698b64df9f2218f10eecf7dc7e2d0, 63c0f396a18b767eb28e895eb95bbdce6c172c59, 69a4a7b162b3db6ac337e3094cdee38f24d42ff7, d57e506f6a1e3929611340fae87c1e4823f4d85c, 6.6 |
| Linux/Linuxgeneric | 6.6 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: clear iso_data always when detaching conn from hcon When setting conn->hcon = NULL, also conn->hcon->iso_data = NULL is necessary, otherwise later iso_conn_free() will UAF. Fix clearing of iso_data in iso_sock_disconn() Fixes KASAN: slab-use-after-free in iso_conn_hold_unless_zero on iso_sock_release() followed by hci_abort_conn_sync().
Quoted source text, attributed separately from HOL analysis.