---
id: CVE-2025-71095
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: stmmac: fix the crash issue for zero copy XDP_TX action

  There is a crash issue when running zero copy XDP_TX action, the crash
  log is shown below.

  [  216.122464]…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: stmmac: fix the crash issue for zero copy XDP_TX action

  There is a crash issue when running zero copy XDP_TX action, the crash
  log is shown below.

  [  216.122464]…
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 5.13.1, < 6.1.160'
  - 'linux_kernel >= 6.2, < 6.6.120'
  - 'linux_kernel >= 6.7, < 6.12.64'
  - 'linux_kernel >= 6.13, < 6.18.4'
  - linux_kernel = 5.13
  - linux_kernel = 6.19
patched:
  - linux_kernel 6.18.4
published: '2026-01-13'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:18:19.260'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-71095'
references:
  - url: 'https://git.kernel.org/stable/c/3f7823219407f2f18044c2b72366a48810c5c821'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/45ee0462b88396a0bd1df1991f801c89994ea72b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4d0ceb7677e1c4616afb96abb4518f70b65abb0d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5e5988736a95b1de7f91b10ac2575454b70e4897'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a48e232210009be50591fdea8ba7c07b0f566a13'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-019113.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-457936.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00293
epssPercentile: 0.21809
ingestedAt: '2026-09-08T15:33:26.995Z'
---

## Overview

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

net: stmmac: fix the crash issue for zero copy XDP_TX action

There is a crash issue when running zero copy XDP_TX action, the crash
log is shown below.

[  216.122464] Unable to handle kernel paging request at virtual address fffeffff80000000
[  216.187524] Internal error: Oops: 0000000096000144 [#1]  SMP
[  216.301694] Call trace:
[  216.304130]  dcache_clean_poc+0x20/0x38 (P)
[  216.308308]  __dma_sync_single_for_device+0x1bc/0x1e0
[  216.313351]  stmmac_xdp_xmit_xdpf+0x354/0x400
[  216.317701]  __stmmac_xdp_run_prog+0x164/0x368
[  216.322139]  stmmac_napi_poll_rxtx+0xba8/0xf00
[  216.326576]  __napi_poll+0x40/0x218
[  216.408054] Kernel panic - not syncing: Oops: Fatal exception in interrupt

For XDP_TX action, the xdp_buff is converted to xdp_frame by
xdp_convert_buff_to_frame(). The memory type of the resulting xdp_frame
depends on the memory type of the xdp_buff. For page pool based xdp_buff
it produces xdp_frame with memory type MEM_TYPE_PAGE_POOL. For zero copy
XSK pool based xdp_buff it produces xdp_frame with memory type
MEM_TYPE_PAGE_ORDER0. However, stmmac_xdp_xmit_back() does not check the
memory type and always uses the page pool type, this leads to invalid
mappings and causes the crash. Therefore, check the xdp_buff memory type
in stmmac_xdp_xmit_back() to fix this issue.

## Affected

- `linux_kernel >= 5.13.1, < 6.1.160`
- `linux_kernel >= 6.2, < 6.6.120`
- `linux_kernel >= 6.7, < 6.12.64`
- `linux_kernel >= 6.13, < 6.18.4`
- `linux_kernel = 5.13`
- `linux_kernel = 6.19`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.18.4`