Linux Kernel up to 7.1.3 synaptics-rmi4/F30 handler rmi_f30_map_gpios/rmi_f30_attention gpioled_count/keycodemax/keycode out-of-bounds

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.7	$0-$5k	0.00

Summaryinfo

A vulnerability described as very critical has been identified in Linux Kernel up to 7.1.3. This affects the function rmi_f30_map_gpios/rmi_f30_attention of the component synaptics-rmi4/F30 handler. Such manipulation of the argument gpioled_count/keycodemax/keycode leads to out-of-bounds. This vulnerability is documented as CVE-2026-64276. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.1.3. It has been rated as very critical. Affected by this issue is the function rmi_f30_map_gpios/rmi_f30_attention of the component synaptics-rmi4/F30 handler. The manipulation of the argument gpioled_count/keycodemax/keycode with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count rmi_f30_map_gpios() allocates gpioled_key_map with min(gpioled_count, TRACKSTICK_RANGE_END) == at most 6 entries, but rmi_f30_attention() iterates the full f30->gpioled_count (device query register, range 0..31) and dereferences gpioled_key_map[i], and input->keycodemax is set to the full gpioled_count while input->keycode points at the 6-entry allocation. A device that reports gpioled_count > 6 with GPIO support enabled therefore causes an out-of-bounds read on the attention interrupt and out-of-bounds read/write through the EVIOCGKEYCODE/EVIOCSKEYCODE ioctls, which bound the index only against keycodemax. This is the same defect as the F3A handler, which was copied from F30. Size the keymap for the full gpioled_count; the mapping loop still assigns only the first min(gpioled_count, TRACKSTICK_RANGE_END) entries.

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2026-64276 since 07/19/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/27/2026).

The vulnerability scanner Nessus provides a plugin with the ID 340744 (AlmaLinux 8 : kernel-rt (ALSA-2026:59737)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.96, 6.18.39, 7.1.4 or 7.2-rc1 eliminates this vulnerability. Applying the patch 8c6d18d61bb6fe0e6edf848413391c590552e8a9/d162a1ead7de404d8b41a093c83ed0db6487cded/f0be9eba946e9200b43265e0a748d38bd0a56954/26c895928d7118436a24f564587cb4aefc40cdd8/4e3689c26854356f41fbaa1eafa382e58ac79e00/e849c6f51e6877104c765da084e001ec37c8e119/bfe622efecd4ff0a792d0ecd1a8dce535a902f50/d577e46785d45484b2ab7e7309c49b18764bf56c is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at Tenable (340744). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.10.260
• 5.15.211
• 6.1.177
• 6.6.144
• 6.12.0
• 6.12.1
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• 6.18.0
• 6.18.1
• 6.18.2
• 6.18.3
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• 6.18.5
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• 6.18.36
• 6.18.37
• 6.18.38
• 7.1.0
• 7.1.1
• 7.1.2
• 7.1.3

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.9
VulDB Meta Temp Score: 8.7

VulDB Base Score: 9.9
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (Linux): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 340744
Nessus Name: AlmaLinux 8 : kernel-rt (ALSA-2026:59737)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.261/5.15.212/6.1.178/6.6.145/6.12.96/6.18.39/7.1.4/7.2-rc1
Patch: 8c6d18d61bb6fe0e6edf848413391c590552e8a9/d162a1ead7de404d8b41a093c83ed0db6487cded/f0be9eba946e9200b43265e0a748d38bd0a56954/26c895928d7118436a24f564587cb4aefc40cdd8/4e3689c26854356f41fbaa1eafa382e58ac79e00/e849c6f51e6877104c765da084e001ec37c8e119/bfe622efecd4ff0a792d0ecd1a8dce535a902f50/d577e46785d45484b2ab7e7309c49b18764bf56c

Timelineinfo

07/19/2026 CVE reserved
07/25/2026 +6 days Advisory disclosed
07/25/2026 +0 days VulDB entry created
08/27/2026 +33 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-64276 (🔒)
GCVE (CVE): GCVE-0-2026-64276
GCVE (VulDB): GCVE-100-383066

Entryinfo

Created: 07/25/2026 12:48
Updated: 08/27/2026 05:55
Changes: 07/25/2026 12:48 (60), 08/16/2026 20:02 (11), 08/27/2026 05:55 (2)
Complete: 🔍
Cache ID: 216::103

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