Linux Kernel up to 6.12.110/6.18.52/7.2.6/7.3-rc2 hwmon ccp_debugfs_init use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00+

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel up to 6.12.110/6.18.52/7.2.6/7.3-rc2. Affected by this issue is the function ccp_debugfs_init of the component hwmon. Executing a manipulation can lead to use after free. The identification of this vulnerability is CVE-2026-97968. The attack can only be executed locally. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.12.110/6.18.52/7.2.6/7.3-rc2 and classified as critical. This vulnerability affects the function ccp_debugfs_init of the component hwmon. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: hwmon: (corsair-cpro) Create debugfs entries after hwmon registration ccp_debugfs_init() registers debugfs files whose private data is the devm allocated ccp. It runs before hwmon_device_register_with_info(), so when that registration fails, ccp_probe() returns with the files still in place. The HID core then frees ccp, and ccp_remove() is not called for a failed probe, so nothing removes them later either. Reading one of the files dereferences the freed pointer. Create the debugfs entries only after the hwmon device has been registered, so no failing path can leave them behind. The two version queries stay where they are. They send USB commands without holding ccp->mutex, which is only safe as long as nothing else can call send_usb_cmd(); once the hwmon device is registered its callbacks can do so concurrently. Only the debugfs creation moves, and it is told which queries succeeded.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-97968 since 09/25/2026. The exploitation appears to be easy. The attack needs to be approached locally. Additional levels of successful authentication are needed for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/25/2026).

Upgrading to version 6.12.111, 6.18.53, 7.2.7 or 7.3-rc3 eliminates this vulnerability. Applying the patch 6c5d333216a937044acd3336e9ec7e30ff2eaee4/a58a966a440071bb877ef62535d1016952f83101/fdfe17cb865715aad30328678344eb79889207ab/508baf1713f32f287bfb4f85d759403ec8ba35a3 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.7
VulDB Temp Score: 7.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.12.111/6.18.53/7.2.7/7.3-rc3
Patch: 6c5d333216a937044acd3336e9ec7e30ff2eaee4/a58a966a440071bb877ef62535d1016952f83101/fdfe17cb865715aad30328678344eb79889207ab/508baf1713f32f287bfb4f85d759403ec8ba35a3

Timelineinfo

09/25/2026 Advisory disclosed
09/25/2026 +0 days CVE reserved
09/25/2026 +0 days VulDB entry created
09/25/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-97968 (🔒)
GCVE (CVE): GCVE-0-2026-97968
GCVE (VulDB): GCVE-100-410224

Entryinfo

Created: 09/25/2026 15:50
Changes: 09/25/2026 15:50 (59)
Complete: 🔍
Cache ID: 216::103

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