SB20260816389 - Use-after-free in Linux kernel i2c busses driver
Published: August 16, 2026
Security Bulletin ID
SB20260816389
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-2026-72140)
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 mlxbf_i2c_init_resource() when handling an error from devm_platform_get_and_ioremap_resource(). A local user can trigger the error path to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/5290a52533e09c38374963f4bb0b35121fe555c7
- https://git.kernel.org/stable/c/6a108c9f5a81bb7b29dbb1398be0089655b6bfd2
- https://git.kernel.org/stable/c/71356737a7a55c76fee847563e3d33f8e6dc6b6d
- https://git.kernel.org/stable/c/b398cbbbb9dd76210682a8c9aabd34c5168800b9
- https://git.kernel.org/stable/c/c4d9b6a0c9645366d9e4af8a6ac8347bd4c841aa
- https://git.kernel.org/stable/c/ce960a1b2caa4ad08291f28d8bcf17ad5a864e54
- https://git.kernel.org/stable/c/e6a395a71f4652261d09b572a03c96052662a056
- https://git.kernel.org/stable/c/fb267770bf822064f510c9b46743f533d8fa8a5f