Double free in Linux kernel - CVE-2026-64447
Published: July 27, 2026
Vulnerability identifier: #VU139494
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-64447
CWE-ID: CWE-415
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a double free and use-after-free in ipu7_isys_init() and ipu7_psys_init() when handling device initialization error paths. A local user can trigger device initialization failures to cause a denial of service.
The issue occurs in the error paths after device teardown frees pdata, and also affects return-value handling through dereference of an already-freed adev pointer.
Affected software
Linux kernel
How to mitigate CVE-2026-64447
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3