Answer in brief
CVE-2026-46140 records a High severity (CVSS 7.1) vulnerability in Bluetooth: btmtk: validate WMT event SKB length before struct access. 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 7.1. 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 | >=f0457842215438786e2e205ad06a4fbb8ab63cd0 <36c85f7029484d5ede769f8873d16e9c8e35533c || >=d019930b0049fc2648a6b279893d8ad330596e81 <c411cf1bfde951cfa821809cf4020ba177f76e0c || >=d019930b0049fc2648a6b279893d8ad330596e81 <624fb79dadc1b65757986a9d0fdde5c0cf3fe179 || >=d019930b0049fc2648a6b279893d8ad330596e81 <70d37a8b9229e394cc17ddad47e90b81d80fcd09 || >=d019930b0049fc2648a6b279893d8ad330596e81 <634a4408c0615c523cf7531790f4f14a422b9206 || >=6.6.142 <6.6.144 | 36c85f7029484d5ede769f8873d16e9c8e35533c, c411cf1bfde951cfa821809cf4020ba177f76e0c, 624fb79dadc1b65757986a9d0fdde5c0cf3fe179, 70d37a8b9229e394cc17ddad47e90b81d80fcd09, 634a4408c0615c523cf7531790f4f14a422b9206, 6.6.144 |
| Linux/Linuxgeneric | 6.11 | Not reported |
Published upstream
May 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 4, 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: btmtk: validate WMT event SKB length before struct access btmtk_usb_hci_wmt_sync() casts the WMT event response SKB data to struct btmtk_hci_wmt_evt (7 bytes) and struct btmtk_hci_wmt_evt_funcc (9 bytes) without first checking that the SKB contains enough data. A short firmware response causes out-of-bounds reads from SKB tailroom. Use skb_pull_data() to validate and advance past the base WMT event header. For the FUNC_CTRL case, pull the additional status field bytes before accessing them.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-46140 records a High severity (CVSS 7.1) vulnerability in Bluetooth: btmtk: validate WMT event SKB length before struct access. 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 7.1. 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 | >=f0457842215438786e2e205ad06a4fbb8ab63cd0 <36c85f7029484d5ede769f8873d16e9c8e35533c || >=d019930b0049fc2648a6b279893d8ad330596e81 <c411cf1bfde951cfa821809cf4020ba177f76e0c || >=d019930b0049fc2648a6b279893d8ad330596e81 <624fb79dadc1b65757986a9d0fdde5c0cf3fe179 || >=d019930b0049fc2648a6b279893d8ad330596e81 <70d37a8b9229e394cc17ddad47e90b81d80fcd09 || >=d019930b0049fc2648a6b279893d8ad330596e81 <634a4408c0615c523cf7531790f4f14a422b9206 || >=6.6.142 <6.6.144 | 36c85f7029484d5ede769f8873d16e9c8e35533c, c411cf1bfde951cfa821809cf4020ba177f76e0c, 624fb79dadc1b65757986a9d0fdde5c0cf3fe179, 70d37a8b9229e394cc17ddad47e90b81d80fcd09, 634a4408c0615c523cf7531790f4f14a422b9206, 6.6.144 |
| Linux/Linuxgeneric | 6.11 | Not reported |
Published upstream
May 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 4, 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: btmtk: validate WMT event SKB length before struct access btmtk_usb_hci_wmt_sync() casts the WMT event response SKB data to struct btmtk_hci_wmt_evt (7 bytes) and struct btmtk_hci_wmt_evt_funcc (9 bytes) without first checking that the SKB contains enough data. A short firmware response causes out-of-bounds reads from SKB tailroom. Use skb_pull_data() to validate and advance past the base WMT event header. For the FUNC_CTRL case, pull the additional status field bytes before accessing them.
Quoted source text, attributed separately from HOL analysis.