Answer in brief
CVE-2026-64408 records a High severity (CVSS 8.8) vulnerability in Bluetooth: bnep: pin L2CAP connection during netdev registration. 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 8.8. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=65f53e9802dbfae0e5758a91793c3f5f8bece49b <390b5db3ff8745187f094c4e915663b7b1f98944 || >=65f53e9802dbfae0e5758a91793c3f5f8bece49b <46a88784c4c9b96954dd86f747ce93f65efa1302 || >=65f53e9802dbfae0e5758a91793c3f5f8bece49b <551ae773ec64045b4e72099132654887e0270bcc || >=65f53e9802dbfae0e5758a91793c3f5f8bece49b <ae215c5b6422d8eda443b861b124bd1be6969c31 || >=65f53e9802dbfae0e5758a91793c3f5f8bece49b <df22adc7eafc22e651561813c11dc51a796b12ee || >=65f53e9802dbfae0e5758a91793c3f5f8bece49b <a6b22dbd80926556290ad2243be25218d6956a19 || >=65f53e9802dbfae0e5758a91793c3f5f8bece49b <563a8573047182f550b1e1e030615755cd8c41da || >=65f53e9802dbfae0e5758a91793c3f5f8bece49b <bb067a99a0356196c0b89a95721985485ebce5a5 | 390b5db3ff8745187f094c4e915663b7b1f98944, 46a88784c4c9b96954dd86f747ce93f65efa1302, 551ae773ec64045b4e72099132654887e0270bcc, ae215c5b6422d8eda443b861b124bd1be6969c31, df22adc7eafc22e651561813c11dc51a796b12ee, a6b22dbd80926556290ad2243be25218d6956a19, 563a8573047182f550b1e1e030615755cd8c41da, bb067a99a0356196c0b89a95721985485ebce5a5 |
| Linux/Linuxgeneric | 3.13 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: pin L2CAP connection during netdev registration bnep_add_connection() reads the L2CAP connection without holding the channel lock, then passes its HCI device to register_netdev(). Controller teardown can clear and release that connection concurrently, leaving the network device registration path to dereference a freed parent device. Take a reference to the L2CAP connection while holding the channel lock. Retain it until register_netdev() has taken the parent device reference.
Quoted source text, attributed separately from HOL analysis.