Out-of-bounds write in Android kernel Wacom driver
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
Google Android kernel is affected by an out-of-bounds write in the Wacom driver, in the wacom_hid_set_device_mode function of wacom_sys.c. A missing bounds check (CWE-119) lets the write go past the end of a buffer. An attacker with physical access can escalate privileges without additional execution privileges or user interaction.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
In wacom_hid_set_device_mode of wacom_sys.c, there is a possible out-of-bounds write due to a missing bounds check. This could lead to physical escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for Android.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-06 Threatist record created from CVE-2026-56936
- 2026-10-07 Alias added: GHSA-4hh3-8fqh-rqcv
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Sources
- CVE-2026-56936 · CVE Program
- CVE-2026-56936 · NVD
- FIRST EPSS
- GHSA-4hh3-8fqh-rqcv · GitHub Advisory Database · CC BY 4.0
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