CVE-2025-71095

Kernel crash via incorrect XDP frame mapping

Published Jan 13, 2026 · Updated Jan 13, 2026

Denial of service in affected Linux Kernel releases allows local users to crash the kernel through zero-copy XDP_TX processing. stmmac_xdp_xmit_back treats every converted frame as page-pool memory, even when a zero-copy XSK buffer produces MEM_TYPE_PAGE_ORDER0, causing an invalid DMA mapping. Exploitation requires local low-privilege access, an stmmac interface, and a zero-copy XSK pool running an XDP program that returns XDP_TX.

CVSS severity5.5
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in affected Linux Kernel releases allows local users to crash the kernel through zero-copy XDP_TX processing. stmmac_xdp_xmit_back treats every converted frame as page-pool memory, even when a zero-copy XSK buffer produces MEM_TYPE_PAGE_ORDER0, causing an invalid DMA mapping. Exploitation requires local low-privilege access, an stmmac interface, and a zero-copy XSK pool running an XDP program that returns XDP_TX.

The record

CVE
CVE-2025-71095
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.13
  2. Affected versionversion=bba2556efad66e7eaa56fece13f7708caa1187f8 <3f7823219407f2f18044c2b72366a48810c5c821
  3. Affected versionversion=bba2556efad66e7eaa56fece13f7708caa1187f8 <45ee0462b88396a0bd1df1991f801c89994ea72b
  4. Affected versionversion=bba2556efad66e7eaa56fece13f7708caa1187f8 <4d0ceb7677e1c4616afb96abb4518f70b65abb0d
  5. Affected versionversion=bba2556efad66e7eaa56fece13f7708caa1187f8 <5e5988736a95b1de7f91b10ac2575454b70e4897
  6. Affected versionversion=bba2556efad66e7eaa56fece13f7708caa1187f8 <a48e232210009be50591fdea8ba7c07b0f566a13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.13; version=bba2556efad66e7eaa56fece13f7708caa1187f8 <3f7823219407f2f18044c2b72366a48810c5c821; version=bba2556efad66e7eaa56fece13f7708caa1187f8 <45ee0462b88396a0bd1df1991f801c89994ea72b; version=bba2556efad66e7eaa56fece13f7708caa1187f8 <4d0ceb7677e1c4616afb96abb4518f70b65abb0d; version=bba2556efad66e7eaa56fece13f7708caa1187f8 <5e5988736a95b1de7f91b10ac2575454b70e4897; version=bba2556efad66e7eaa56fece13f7708caa1187f8 <a48e232210009be50591fdea8ba7c07b0f566a13

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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