Bluetooth: btmtk: fix URB leak in alloc_mtk_intr_urb error path (CVE-2026-74301) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-74301

Bluetooth: btmtk: fix URB leak in alloc_mtk_intr_urb error path

Answer in brief

CVE-2026-74301 records a Unknown severity vulnerability in Bluetooth: btmtk: fix URB leak in alloc_mtk_intr_urb error path. 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.

Published Aug 15, 2026Updated Aug 15, 2026Source checked Aug 15, 2026First seen by HOL Aug 15, 2026Material review Aug 15, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

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.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=ceac1cb0259de682d78f5c784ef8e0b13022e9d9 <2643524743b9cc3c6f5f34cde2a8c627d793f21c \|\| >=ceac1cb0259de682d78f5c784ef8e0b13022e9d9 <7f206a8d8d82296aa2d30bf5f3e5bb73fc44591d \|\| >=ceac1cb0259de682d78f5c784ef8e0b13022e9d9 <4e354991da5890d5ce7bfea3f66fb897ae301756 \|\| >=ceac1cb0259de682d78f5c784ef8e0b13022e9d9 <f396f4005180928cd9e15e352a6512865d3bc908	2643524743b9cc3c6f5f34cde2a8c627d793f21c, 7f206a8d8d82296aa2d30bf5f3e5bb73fc44591d, 4e354991da5890d5ce7bfea3f66fb897ae301756, f396f4005180928cd9e15e352a6512865d3bc908
Linux/Linuxgeneric	6.11	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 2643524743b9cc3c6f5f34cde2a8c627d793f21c if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 15, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btmtk: fix URB leak in alloc_mtk_intr_urb error path When btmtk_isopkt_pad() fails, the previously allocated URB is not freed, leaking the urb structure. Add usb_free_urb() before returning the error.

Quoted source text, attributed separately from HOL analysis.

Back to active CVEs

Unknown severity · Source severity not reportedCVE-2026-74301

Bluetooth: btmtk: fix URB leak in alloc_mtk_intr_urb error path

Answer in brief

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 15, 2026Updated Aug 15, 2026Source checked Aug 15, 2026First seen by HOL Aug 15, 2026Material review Aug 15, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

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.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=ceac1cb0259de682d78f5c784ef8e0b13022e9d9 <2643524743b9cc3c6f5f34cde2a8c627d793f21c \|\| >=ceac1cb0259de682d78f5c784ef8e0b13022e9d9 <7f206a8d8d82296aa2d30bf5f3e5bb73fc44591d \|\| >=ceac1cb0259de682d78f5c784ef8e0b13022e9d9 <4e354991da5890d5ce7bfea3f66fb897ae301756 \|\| >=ceac1cb0259de682d78f5c784ef8e0b13022e9d9 <f396f4005180928cd9e15e352a6512865d3bc908	2643524743b9cc3c6f5f34cde2a8c627d793f21c, 7f206a8d8d82296aa2d30bf5f3e5bb73fc44591d, 4e354991da5890d5ce7bfea3f66fb897ae301756, f396f4005180928cd9e15e352a6512865d3bc908
Linux/Linuxgeneric	6.11	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 2643524743b9cc3c6f5f34cde2a8c627d793f21c if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 15, 2026

Sources and claim methodology

Upstream source description

Quoted source text, attributed separately from HOL analysis.

Bluetooth: btmtk: fix URB leak in alloc_mtk_intr_urb error path

Key facts

Why this deserves its current priority

Affected scope and exposure questions

Recommended response

Evidence timeline and material changes

Sources and claim methodology

Related CVEs

Bluetooth: btmtk: fix URB leak in alloc_mtk_intr_urb error path

Key facts

Why this deserves its current priority

Affected scope and exposure questions

Recommended response

Evidence timeline and material changes

Sources and claim methodology

Related CVEs