VulnerabilityPublished 25 Sep 2026Updated 19 Oct 2026

CVE-2026-97967: Linux kernel · hwmon: (corsair-cpro) Remove debugfs entries when probe fails

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in fdc1bc23ff59ee308042342cefcb918d6efba409 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in fdc1bc23ff59ee308042342cefcb918d6efba409, ae01aafd8214e48cb7eff11e92dfbf3778d52d9d, a5de53b08cc319dadce6fb68d33749ea37962952 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to fdc1bc23ff59ee308042342cefcb918d6efba409, ae01aafd8214e48cb7eff11e92dfbf3778d52d9d, a5de53b08cc319dadce6fb68d33749ea37962952 or 4ee875c423c66c45d7ef7bbff403cd0e3971e0a2.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 5997eb60f896830126bc1783465b678b110e2fdd, < fdc1bc23ff59ee308042342cefcb918d6efba409	Fixed in fdc1bc23ff59ee308042342cefcb918d6efba409
LinuxLinux	Affected ≥ 5997eb60f896830126bc1783465b678b110e2fdd, < ae01aafd8214e48cb7eff11e92dfbf3778d52d9d	Fixed in ae01aafd8214e48cb7eff11e92dfbf3778d52d9d
LinuxLinux	Affected ≥ 5997eb60f896830126bc1783465b678b110e2fdd, < a5de53b08cc319dadce6fb68d33749ea37962952	Fixed in a5de53b08cc319dadce6fb68d33749ea37962952
LinuxLinux	Affected ≥ 5997eb60f896830126bc1783465b678b110e2fdd, < 4ee875c423c66c45d7ef7bbff403cd0e3971e0a2	Fixed in 4ee875c423c66c45d7ef7bbff403cd0e3971e0a2
LinuxLinux	Affected =6.11	Fixed in–

AI-suggested

The issue is fixed in the Linux kernel by removing debugfs entries on probe failure. Users should update to a Linux kernel version that includes the fix identified by the commits fdc1bc23ff59ee308042342cefcb918d6efba409, ae01aafd8214e48cb7eff11e92dfbf3778d52d9d, a5de53b08cc319dadce6fb68d33749ea37962952, or 4ee875c423c66c45d7ef7bbff403cd0e3971e0a2. No additional mitigation is required once patched.

Description

A vulnerability in the Linux kernel's hwmon subsystem (corsair-cpro driver) was fixed by ensuring debugfs entries are removed when the probe fails. Previously, if hwmon_device_register_with_info() failed after debugfs files were registered, the probe would return without removing these entries, leaving behind debugfs files that referenced freed memory. This could lead to use-after-free conditions when reading those files.

Impact

This vulnerability could cause use-after-free conditions when userspace reads debugfs files left behind after a failed probe, potentially leading to kernel memory corruption or crashes. However, no known exploits are reported in the wild.

Summary

The Linux kernel's corsair-cpro hwmon driver had a flaw where debugfs entries created during probe were not removed if hwmon_device_register_with_info() failed immediately afterward. Since the HID core frees the device structure without calling ccp_remove() on failure, the debugfs files remained accessible and referenced freed memory. The fix removes debugfs entries on the error path using debugfs_remove_recursive(), which waits for any readers to finish before completing removal, preventing access to freed memory after probe failure.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 13:21 UTC

Technical details

References

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