---
id: CVE-2025-38458
title: 'atm: clip: Fix NULL pointer dereference in vcc_sendmsg()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  atm: clip: Fix NULL pointer dereference in vcc_sendmsg()

  atmarpd_dev_ops does not implement the send method, which may cause crash
  as bellow.

  BUG: kernel NULL pointer…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    9ec7e943aee5c28c173933f9defd40892fb3be3d
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    a16fbe6087e91c8e7c4aa50e1af7ad56edbd9e3e
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    7f1cad84ac1a6af42d9d57e879de47ce37995024
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    27b5bb7ea1a8fa7b8c4cfde4d2bf8650cca2e8e8
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    07b585ae3699c0a5026f86ac846f144e34875eee
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    34a09d6240a25185ef6fc5a19dbb3cdbb6a78bc0
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    7f8a9b396037daae453a108faec5b28886361323
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    22fc46cea91df3dce140a7dc6847c6fcf0354505
  - Linux 2.6.12
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:57:13.456796Z'
published: '2025-07-25'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T21:02:39.337Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-38458'
references:
  - url: 'https://git.kernel.org/stable/c/9ec7e943aee5c28c173933f9defd40892fb3be3d'
  - url: 'https://git.kernel.org/stable/c/a16fbe6087e91c8e7c4aa50e1af7ad56edbd9e3e'
  - url: 'https://git.kernel.org/stable/c/7f1cad84ac1a6af42d9d57e879de47ce37995024'
  - url: 'https://git.kernel.org/stable/c/27b5bb7ea1a8fa7b8c4cfde4d2bf8650cca2e8e8'
  - url: 'https://git.kernel.org/stable/c/07b585ae3699c0a5026f86ac846f144e34875eee'
  - url: 'https://git.kernel.org/stable/c/34a09d6240a25185ef6fc5a19dbb3cdbb6a78bc0'
  - url: 'https://git.kernel.org/stable/c/7f8a9b396037daae453a108faec5b28886361323'
  - url: 'https://git.kernel.org/stable/c/22fc46cea91df3dce140a7dc6847c6fcf0354505'
tags:
  - cve.org
epss: 0.00196
epssPercentile: 0.09386
ingestedAt: '2026-11-05T22:38:31.987Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

atm: clip: Fix NULL pointer dereference in vcc_sendmsg()

atmarpd_dev_ops does not implement the send method, which may cause crash
as bellow.

BUG: kernel NULL pointer dereference, address: 0000000000000000
PGD 0 P4D 0
Oops: Oops: 0010 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted 6.15.0-rc6-syzkaller-00346-g5723cc3450bc #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000d3cf778 EFLAGS: 00010246
RAX: 1ffffffff1910dd1 RBX: 00000000000000c0 RCX: dffffc0000000000
RDX: ffffc9000dc82000 RSI: ffff88803e4c4640 RDI: ffff888052cd0000
RBP: ffffc9000d3cf8d0 R08: ffff888052c9143f R09: 1ffff1100a592287
R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff92001a79f00
R13: ffff888052cd0000 R14: ffff88803e4c4640 R15: ffffffff8c886e88
FS:  00007fbc762566c0(0000) GS:ffff88808d6c2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000041f1b000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vcc_sendmsg+0xa10/0xc50 net/atm/common.c:644
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg+0x219/0x270 net/socket.c:727
 ____sys_sendmsg+0x52d/0x830 net/socket.c:2566
 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2620
 __sys_sendmmsg+0x227/0x430 net/socket.c:2709
 __do_sys_sendmmsg net/socket.c:2736 [inline]
 __se_sys_sendmmsg net/socket.c:2733 [inline]
 __x64_sys_sendmmsg+0xa0/0xc0 net/socket.c:2733
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

## Affected

- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9ec7e943aee5c28c173933f9defd40892fb3be3d`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a16fbe6087e91c8e7c4aa50e1af7ad56edbd9e3e`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7f1cad84ac1a6af42d9d57e879de47ce37995024`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 27b5bb7ea1a8fa7b8c4cfde4d2bf8650cca2e8e8`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 07b585ae3699c0a5026f86ac846f144e34875eee`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 34a09d6240a25185ef6fc5a19dbb3cdbb6a78bc0`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7f8a9b396037daae453a108faec5b28886361323`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 22fc46cea91df3dce140a7dc6847c6fcf0354505`
- `Linux 2.6.12`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.