Access of Uninitialized Pointer in Linux kernel - CVE-2026-90104
Published: September 19, 2026
Vulnerability identifier: #VU151375
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90104
CWE-ID: CWE-824
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to an uninitialized pointer in the NFSv4.1 callback sequence argument decoder when handling NFSv4.1 callback sequence arguments containing an empty referring call list. A remote attacker can send a crafted NFSv4.1 callback request to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-90104
Install security update from vendor's repository.