CVE-2022-49320

Service interruption via DMA allocation integer overflow

Published Feb 26, 2025 · Updated May 11, 2026

Integer overflow in the ZynqMP DMA driver in Linux allows local users to interrupt service during DMA channel resource allocation. The zynqmp_dma_alloc_chan_resources and zynqmp_dma_free_chan_resources paths multiply two 32-bit values before widening the size, so the byte count can wrap. The vulnerable path is relevant only when the ZynqMP DMA driver is present and channel resources are allocated or freed.

CVSS severity5.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in the ZynqMP DMA driver in Linux allows local users to interrupt service during DMA channel resource allocation. The zynqmp_dma_alloc_chan_resources and zynqmp_dma_free_chan_resources paths multiply two 32-bit values before widening the size, so the byte count can wrap. The vulnerable path is relevant only when the ZynqMP DMA driver is present and channel resources are allocated or freed.

The record

CVE
CVE-2022-49320
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-190, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=4.8
  2. Affected versionversion=b0cc417c1637192be658e68a74c8d1568e3d35f6 <4838969e4d95d2bd2995d1605b20d3144fcb3e74
  3. Affected versionversion=b0cc417c1637192be658e68a74c8d1568e3d35f6 <7b5488f4721fed6e121e661e165bab06ae2f8675
  4. Affected versionversion=b0cc417c1637192be658e68a74c8d1568e3d35f6 <83960276ffc9bf5570d4106490346b61e61be5f3
  5. Affected versionversion=b0cc417c1637192be658e68a74c8d1568e3d35f6 <90aefae2e3a770a6909d339f5d8a988c0b0ceaf0
  6. Affected versionversion=b0cc417c1637192be658e68a74c8d1568e3d35f6 <95a0ba85c1b51b36e909841c02d205cd223ab753
  7. Affected versionversion=b0cc417c1637192be658e68a74c8d1568e3d35f6 <f9a9f43a62a04ec3183fb0da9226c7706eed0115

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.8; version=b0cc417c1637192be658e68a74c8d1568e3d35f6 <4838969e4d95d2bd2995d1605b20d3144fcb3e74; version=b0cc417c1637192be658e68a74c8d1568e3d35f6 <7b5488f4721fed6e121e661e165bab06ae2f8675; version=b0cc417c1637192be658e68a74c8d1568e3d35f6 <83960276ffc9bf5570d4106490346b61e61be5f3; version=b0cc417c1637192be658e68a74c8d1568e3d35f6 <90aefae2e3a770a6909d339f5d8a988c0b0ceaf0; version=b0cc417c1637192be658e68a74c8d1568e3d35f6 <95a0ba85c1b51b36e909841c02d205cd223ab753; version=b0cc417c1637192be658e68a74c8d1568e3d35f6 <f9a9f43a62a04ec3183fb0da9226c7706eed0115

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

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
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

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Your stack

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