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Linux Kernel CVE-2026-80604

| EUVDEUVD-2026-67480 HIGH
2026-08-28 Linux GHSA-9mrq-m3fm-3h9w
8.8
CVSS 3.1 · Vendor: Linux
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Severity by source

Vendor (Linux) PRIMARY
8.8 HIGH
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
8.3 HIGH

Adjacent attacker controls HID device without OS privileges; OOB read justifies C:H and A:H, but I:L reflects no confirmed write primitive in the description.

3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
4.0 AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (Linux).

CVSS VectorVendor: Linux

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

5
Analysis Generated
Aug 29, 2026 - 07:29 vuln.today
CVSS changed
Aug 29, 2026 - 07:22 NVD
8.8 (HIGH)
Patch available
Aug 28, 2026 - 09:02 EUVD
CVE Published
Aug 28, 2026 - 06:48 cve.org
UNKNOWN (no severity yet)
CVE Published
Aug 28, 2026 - 06:48 cve.org
HIGH 8.8

DescriptionCVE.org

In the Linux kernel, the following vulnerability has been resolved:

HID: core: Fix OOB read in hid_get_report for numbered reports

When a caller passes a size of 0 to hid_report_raw_event() for a numbered report, the function originally called hid_get_report() before performing any size validation.

Inside hid_get_report(), if the report is numbered (report_enum->numbered is true), it unconditionally dereferences data[0] to extract the report ID. With a size of 0, this results in an out-of-bounds read or kernel panic.

Fix this by moving the numbered report size validation check before the call to hid_get_report(), ensuring that size is at least 1 before dereferencing the data pointer.

AnalysisAI

Out-of-bounds read in the Linux kernel HID subsystem (hid_get_report) allows an adjacent, unauthenticated attacker to trigger a kernel panic or leak kernel memory by submitting a zero-length numbered HID report via a crafted Bluetooth or USB device. The vulnerability affects multiple stable kernel branches from 5.10.x through 7.1.x, with patches backported across all supported trees. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation The vulnerable code path is reached when the target is running an affected Linux kernel version with HID support compiled in (the default for all general-purpose Linux distributions). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector AV:A/AC:L/PR:N/UI:N scores this at 8.8, reflecting that an adjacent, unauthenticated attacker can exploit this with low complexity and no user interaction - consistent with a Bluetooth HID device scenario where the attacker is within wireless range. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Vendor-released patches are confirmed for the following kernel versions: 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 6.18.40, and 7.2 (with 7.1.5 also listed). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, conduct a complete inventory of Linux systems running kernel versions 5.10.x through 7.1.x and assess exposure of systems with Bluetooth or USB device support enabled in untrusted or adjacent-network environments. …

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CVE-2026-80604 vulnerability details – vuln.today

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