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high7.5

CVE-2025-71120

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf A zer…

Impact

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf A zero length gss_token results in pages == 0 and in_token->pages[0] is NULL. The code unconditionally evaluates page_address(in_token->pages[0]) for the initial memcpy, which can dereference NULL even when the copy length is 0. Guard the first memcpy so it only runs when length > 0.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 4.19.99 before 4.20
from 5.4.15 before 5.5
from 5.5.1 before 5.10.248
from 5.11 before 5.15.198
from 5.16 before 6.1.160
from 6.2 before 6.6.120

Weakness classification

CWE-476

References