SB20260727297 - Use-after-free in Linux kernel i2c driver
Published: July 27, 2026
Security Bulletin ID
SB20260727297
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-64279)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a use-after-free in the i2c core adapter lookup and deregistration logic when looking up an adapter by id during adapter deregistration or registration failure. A local user can trigger a race condition to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/11dfa37bf544cc806f21742ca2fd2d841bd7032e
- https://git.kernel.org/stable/c/35dbd1f1f603401155cbd3a180bb18e3a3b675b8
- https://git.kernel.org/stable/c/9882a9bd74db08e7bae5821a7050627ae92d3380
- https://git.kernel.org/stable/c/b1a58ed9eab146b36f41a55db8f5d7ce9fdedf3f
- https://git.kernel.org/stable/c/b6d2af6fe9c1f5ec0484536753c979cbd40a8ac3
- https://git.kernel.org/stable/c/bb234487a447a99315add1b46aa57b72e163e1eb
- https://git.kernel.org/stable/c/d39282f552dd6c35b9b84b4af78f1198c24f3373