CVE-2022-49452Network attack vector

Remote crash via stale DPAA2 DMA mapping

Published Feb 26, 2025 · Updated Aug 5, 2026

Denial of service in the Linux kernel 5.18 through 5.18.2 allows remote attackers to crash affected systems via DPAA2 TSO traffic. The dpaa2_eth_free_tx_fd path unmaps a TSO header before dpaa2_iova_to_virt retrieves its virtual address, so kfree receives an invalid pointer. Reachability requires supported Freescale DPAA2 networking hardware and the affected transmit-segmentation path; triggering causes a kernel paging fault and service interruption.

CVSS severity7.5
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in the Linux kernel 5.18 through 5.18.2 allows remote attackers to crash affected systems via DPAA2 TSO traffic. The dpaa2_eth_free_tx_fd path unmaps a TSO header before dpaa2_iova_to_virt retrieves its virtual address, so kfree receives an invalid pointer. Reachability requires supported Freescale DPAA2 networking hardware and the affected transmit-segmentation path; triggering causes a kernel paging fault and service interruption.

The record

CVE
CVE-2022-49452
Published
Feb 26, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3dc709e0cd47c602a8d1a6747f1a91e9737eeed3 <06d129946a71f3159b3b40ee95549183edf2c79d
  2. Affected versionversion=3dc709e0cd47c602a8d1a6747f1a91e9737eeed3 <ba5fe3dd4833bbc03609c5c0c2dd2cea5fa5addf
  3. Affected versionversion=5.18

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3dc709e0cd47c602a8d1a6747f1a91e9737eeed3 <06d129946a71f3159b3b40ee95549183edf2c79d; version=3dc709e0cd47c602a8d1a6747f1a91e9737eeed3 <ba5fe3dd4833bbc03609c5c0c2dd2cea5fa5addf; version=5.18

Published CVSS scores

7.5kernel.orgCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo