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CVE-2026-97968

Linux: hwmon: (corsair-cpro) Create debugfs entries after hwmon registration

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 5% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in6c5d333216a937044acd3336e9ec7e30ff2eaee4Also 508baf1713f32f287bfb4f85d759403ec8ba35a3CVE List
Published25 Sep 2026Updated 19 Oct 2026CVE List

What fixes it

  • 6c5d333216a937044acd3336e9ec7e30ff2eaee4LinuxCVE List
  • 508baf1713f32f287bfb4f85d759403ec8ba35a3LinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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.

Text from CVE List

Affected versions 10

  • Linuxaffected: 5997eb60f896830126bc1783465b678b110e2fdd before 6c5d333216a937044acd3336e9ec7e30ff2eaee4CVE List
  • Linuxaffected: 5997eb60f896830126bc1783465b678b110e2fdd before a58a966a440071bb877ef62535d1016952f83101CVE List
  • Linuxaffected: 5997eb60f896830126bc1783465b678b110e2fdd before fdfe17cb865715aad30328678344eb79889207abCVE List
  • Linuxaffected: 5997eb60f896830126bc1783465b678b110e2fdd before 508baf1713f32f287bfb4f85d759403ec8ba35a3CVE List
  • Linuxaffected: 6.11CVE List
  • Linuxunaffected: all versions before 6.11CVE List
  • Linuxunaffected: 6.12.111 through 6.12.*CVE List
  • Linuxunaffected: 6.18.53 through 6.18.*CVE List
  • Linuxunaffected: 7.2.7 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 4