Answer in brief
CVE-2026-74530 records a Unknown severity vulnerability in Bluetooth: hci_sync: hold conn in hci_connect_big_sync() callback. 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 | >=024421cf39923927ab2b5fe895d1d922b9abe67f <2d91e6244b69d752503b2d44020d8b0e323dbd38 || >=024421cf39923927ab2b5fe895d1d922b9abe67f <56e78b670356caab0b607e8aad4cf819a1909d07 || 620810ac1f7f1133a9ac403e132b3ad6995ddf39 || ee0586ad64a805eaf1a9a10100e908627a561e34 || >=6.12.28 <6.13 || >=6.14.6 <6.15 | 2d91e6244b69d752503b2d44020d8b0e323dbd38, 56e78b670356caab0b607e8aad4cf819a1909d07, 6.13, 6.15 |
| Linux/Linuxgeneric | 6.15 | 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: hci_sync: hold conn in hci_connect_big_sync() callback There is theoretical UAF if the conn is freed while the hci_sync task is running. Hold refcount to avoid that. Handle NULL hcon, return 0 + do nothing to match the previous behavior.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-74530 records a Unknown severity vulnerability in Bluetooth: hci_sync: hold conn in hci_connect_big_sync() callback. 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 | >=024421cf39923927ab2b5fe895d1d922b9abe67f <2d91e6244b69d752503b2d44020d8b0e323dbd38 || >=024421cf39923927ab2b5fe895d1d922b9abe67f <56e78b670356caab0b607e8aad4cf819a1909d07 || 620810ac1f7f1133a9ac403e132b3ad6995ddf39 || ee0586ad64a805eaf1a9a10100e908627a561e34 || >=6.12.28 <6.13 || >=6.14.6 <6.15 | 2d91e6244b69d752503b2d44020d8b0e323dbd38, 56e78b670356caab0b607e8aad4cf819a1909d07, 6.13, 6.15 |
| Linux/Linuxgeneric | 6.15 | 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: hci_sync: hold conn in hci_connect_big_sync() callback There is theoretical UAF if the conn is freed while the hci_sync task is running. Hold refcount to avoid that. Handle NULL hcon, return 0 + do nothing to match the previous behavior.
Quoted source text, attributed separately from HOL analysis.