CVE-2025-71120
kernel: Linux kernel: Denial of Service in SUNRPC via zero-length gss_token
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · January 14, 2026
Updated · July 30, 2026
Description
A flaw was found in the Linux kernel's SUN Remote Procedure Call (SUNRPC) subsystem, specifically within the svcauth_gss module. A remote attacker could exploit this vulnerability by providing a zero-length Generic Security Service (GSS) token. This can lead to a NULL pointer dereference in the gss_read_proxy_verf function, causing a system crash and resulting in a denial of service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference