CVE-2024-39471

Kernel memory disclosure via unchecked SDMA index

Published Jun 25, 2024 · Updated Aug 5, 2026

Out-of-bounds read in Linux kernel AMDGPU SDMA 4.0 code allows local users to read memory outside the SDMA instance array. The sdma_v4_0_process_trap_irq handler uses the result of sdma_v4_0_irq_id_to_seq as an array index without rejecting its -EINVAL return for an unknown interrupt client ID. Triggering the flaw requires local low-privileged access and affected AMDGPU SDMA 4.0 hardware; the resulting read can expose kernel memory or interrupt the system.

CVSS severity7.1
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Linux kernel AMDGPU SDMA 4.0 code allows local users to read memory outside the SDMA instance array. The sdma_v4_0_process_trap_irq handler uses the result of sdma_v4_0_irq_id_to_seq as an array index without rejecting its -EINVAL return for an unknown interrupt client ID. Triggering the flaw requires local low-privileged access and affected AMDGPU SDMA 4.0 hardware; the resulting read can expose kernel memory or interrupt the system.

The record

CVE
CVE-2024-39471
Published
Jun 25, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 25, 2024CVE 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

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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=5.4
  2. Affected versionversion=7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 <011552f29f20842c9a7a21bffe1f6a2d6457ba46
  3. Affected versionversion=7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 <0964c84b93db7fbf74f357c1e20957850e092db3
  4. Affected versionversion=7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 <5594971e02764aa1c8210ffb838cb4e7897716e8
  5. Affected versionversion=7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 <5b0a3dc3e87821acb80e841b464d335aff242691
  6. Affected versionversion=7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 <8112fa72b7f139052843ff484130d6f97e9f052f
  7. Affected versionversion=7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 <8b2faf1a4f3b6c748c0da36cda865a226534d520
  8. Affected versionversion=7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 <ea906e9ac61e3152bef63597f2d9f4a812fc346a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.4; version=7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 <011552f29f20842c9a7a21bffe1f6a2d6457ba46; version=7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 <0964c84b93db7fbf74f357c1e20957850e092db3; version=7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 <5594971e02764aa1c8210ffb838cb4e7897716e8; version=7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 <5b0a3dc3e87821acb80e841b464d335aff242691; version=7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 <8112fa72b7f139052843ff484130d6f97e9f052f; version=7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 <8b2faf1a4f3b6c748c0da36cda865a226534d520; version=7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 <ea906e9ac61e3152bef63597f2d9f4a812fc346a

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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

CWE-125Out-of-bounds Read

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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