CVEvulnerability

CVE-2025-71120

5.5 MEDIUM Published 2026-01-14 Modified 2026-10-19 Official page ↗
Status
Modified
Published
2026-01-14
Last modified
2026-10-19
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

Description

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 configurations

• linux linux kernel (>= 4.19.99 < 4.20) • linux linux kernel (>= 5.4.15 < 5.5) • linux linux kernel (>= 5.5.1 < 5.10.248) • linux linux kernel (>= 5.11 < 5.15.198) • linux linux kernel (>= 5.16 < 6.1.160) • linux linux kernel (>= 6.2 < 6.6.120) • linux linux kernel (>= 6.7 < 6.12.64) • linux linux kernel (>= 6.13 < 6.18.3) • linux linux kernel 5.5 • linux linux kernel 6.19

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References