SB20260727139 - Use-after-free in Linux kernel nxp imx8-isi driver
Published: July 27, 2026
Security Bulletin ID
SB20260727139
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-2026-64421)
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 use-after-free in mxc_isi_remove() and the imx8-isi media cleanup path when removing the imx8_isi module. A local user can trigger module removal to cause a denial of service.
The issue occurs because media links are removed after the media entity pads they reference have already been freed.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/b670bf89824ede5d07d20bb9bfbafb754846081d
- https://git.kernel.org/stable/c/ba2aa5d325270cd965c44458c5ff5ab555e6af51
- https://git.kernel.org/stable/c/c12a5b2261351cd3b03921ce4720332ff5184b50
- https://git.kernel.org/stable/c/d22fb719654bfde6f682c9f14629f5f9534175b7
- https://git.kernel.org/stable/c/ef382a6baf0a95cf199fdf6bba2fd08e58b0a249