CVEvulnerability

CVE-2025-38460

5.5 MEDIUM Published 2025-07-25 Modified 2026-10-15 Official page ↗
Status
Modified
Published
2025-07-25
Last modified
2026-10-15
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
7.0 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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: atm: clip: Fix potential null-ptr-deref in to_atmarpd(). atmarpd is protected by RTNL since commit f3a0592b37b8 ("[ATM]: clip causes unregister hang"). However, it is not enough because to_atmarpd() is called without RTNL, especially clip_neigh_solicit() / neigh_ops->solicit() is unsleepable. Also, there is no RTNL dependency around atmarpd. Let's use a private mutex and RCU to protect access to atmarpd in to_atmarpd().

Affected configurations

• linux linux kernel (>= 2.6.13 < 5.4.296) • linux linux kernel (>= 5.5 < 5.10.240) • linux linux kernel (>= 5.11 < 5.15.189) • linux linux kernel (>= 5.16 < 6.1.146) • linux linux kernel (>= 6.2 < 6.6.99) • linux linux kernel (>= 6.7 < 6.12.39) • linux linux kernel (>= 6.13 < 6.15.7) • linux linux kernel 2.6.12 • linux linux kernel 6.16 • debian debian linux 11.0

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References