CVE-2026-68091
CVE-2026-68091 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-404.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- EPSS exploit prediction: 0% (17th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-404
- Published:
- Last modified:
Description
In the Linux kernel, the following vulnerability has been resolved: HID: wacom: stop hardware after post-start probe failures wacom_parse_and_register() starts HID hardware before registering inputs and initializing pad LEDs/remotes. Those later steps can fail, but their error paths currently release Wacom resources without stopping the HID hardware. Route post-hid_hw_start() failures through hid_hw_stop() before releasing driver resources. This issue was identified during our ongoing static-analysis research while reviewing kernel code.
Frequently asked questions
- What is CVE-2026-68091?
- In the Linux kernel, the following vulnerability has been resolved: HID: wacom: stop hardware after post-start probe failures wacom_parse_and_register() starts HID hardware before registering inputs and initializing pad LEDs/remotes. Those later steps can fail, but their error paths currently release Wacom resources without stopping the HID hardware. Route post-hid_hw_start() failures through hid_hw_stop() before releasing driver resources. This issue was identified during our ongoing static-analysis research while reviewing kernel code.
- How severe is CVE-2026-68091?
- CVE-2026-68091 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-68091 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-68091?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-68091 published?
- CVE-2026-68091 was published on 2026-08-10 and last updated on 2026-10-19.
References
- https://git.kernel.org/stable/c/1a1ebdcb56ae58a0ee2c54dd15d75121e30424e3
- https://git.kernel.org/stable/c/3e6473a4f0596182acdda5219b4bebfbee76514f
- https://git.kernel.org/stable/c/416095e9a6037b4b39fcadd0d2bd77a8852211ec
- https://git.kernel.org/stable/c/46d8b8c85ae0589fb85746a64e8908160e52aac3
- https://git.kernel.org/stable/c/5a7ca028facf04921b2c1c2e4d1ee7f282510555
- https://git.kernel.org/stable/c/75eb2173b63ab41c24d80cd641af18f3c117a267
- https://git.kernel.org/stable/c/e2cc711a9df37f359159b21db56cea9c21f58a9c
- https://git.kernel.org/stable/c/ec2612b8ad9e642596db011dd8b6568ef1edeaa1
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