CVE-2024-56594

Kernel warning via oversized AMDGPU DMA segments

Published Dec 27, 2024 · Updated May 11, 2026

Improper DMA segment handling in the Linux kernel's AMDGPU driver allows local users to trigger a kernel warning during GPU memory allocation. The driver leaves the device's maximum scatter-gather segment size at an unsuitable default, so amdgpu_bo_move can map segments longer than the DMA layer permits. Reachability requires an AMD GPU, the AMDGPU/KFD path, and local access capable of issuing a GPU-memory allocation ioctl; the published trace demonstrates a warning rather than a crash or code execution.

CVSS severity7.0
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper DMA segment handling in the Linux kernel's AMDGPU driver allows local users to trigger a kernel warning during GPU memory allocation. The driver leaves the device's maximum scatter-gather segment size at an unsuitable default, so amdgpu_bo_move can map segments longer than the DMA layer permits. Reachability requires an AMD GPU, the AMDGPU/KFD path, and local access capable of issuing a GPU-memory allocation ioctl; the published trace demonstrates a warning rather than a crash or code execution.

The record

CVE
CVE-2024-56594
Published
Dec 27, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 27, 2024CVE 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=4.2
  2. Affected versionversion=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <13c3a54f48a612a117dfd82a9dd91732261e869d
  3. Affected versionversion=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <76581147b05c2adb6b47bbc697521725f10224e4
  4. Affected versionversion=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <76649ccf97e2cd72b62e34ed2fba6e0f89497eab
  5. Affected versionversion=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <b5807a08954fdf914ef80b49aaa6cda965ecc95c
  6. Affected versionversion=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <b9e52a96ec92245bf15dabba1d3d862d7a03efb8
  7. Affected versionversion=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <e2e97435783979124ba92d6870415c57ecfef6a5
  8. Affected versionversion=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <ff0346a74627a5f607a33a3852586f8c7f678329

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.2; version=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <13c3a54f48a612a117dfd82a9dd91732261e869d; version=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <76581147b05c2adb6b47bbc697521725f10224e4; version=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <76649ccf97e2cd72b62e34ed2fba6e0f89497eab; version=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <b5807a08954fdf914ef80b49aaa6cda965ecc95c; version=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <b9e52a96ec92245bf15dabba1d3d862d7a03efb8; version=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <e2e97435783979124ba92d6870415c57ecfef6a5; version=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <ff0346a74627a5f607a33a3852586f8c7f678329

Published CVSS scores

7.0OracleCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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

No sourced classifications are available.

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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