Use-after-free in Linux kernel - CVE-2026-98740
Published: October 24, 2026
Vulnerability identifier: #VU157640
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98740
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to potentially cause a denial of service.
The vulnerability exists due to use-after-free in the Altera EDAC ECC setup callbacks and their helpers when device probing executes after initialization memory has been freed. A local privileged user can potentially trigger a deferred probe or a manual device unbind/rebind to invoke functions incorrectly marked __init, potentially crashing the kernel by executing freed memory.
Affected software
Linux kernel
How to mitigate CVE-2026-98740
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3