CVE-2024-47730

Freed-memory access via late QM error injection

Published Oct 21, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux Hisilicon QM driver allows local users to expose released host memory to accelerator access during reset. The driver stops a queue before injecting the QM error, so queue memory can be released while the master out-of-order engine can still access it. Reachability requires a Hisilicon PCIe crypto accelerator, an active queue, and an uncorrectable ECC fault; stale access can disclose or corrupt reused memory or crash the host.

CVSS severity7.0
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux Hisilicon QM driver allows local users to expose released host memory to accelerator access during reset. The driver stops a queue before injecting the QM error, so queue memory can be released while the master out-of-order engine can still access it. Reachability requires a Hisilicon PCIe crypto accelerator, an active queue, and an uncorrectable ECC fault; stale access can disclose or corrupt reused memory or crash the host.

The record

CVE
CVE-2024-47730
Published
Oct 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 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=5.8
  2. Affected versionversion=6c6dd5802c2d6769fa589c0e8de54299def199a7 <801d64177faaec184cee1e1aa4d8487df1364a54
  3. Affected versionversion=6c6dd5802c2d6769fa589c0e8de54299def199a7 <85e81103033324d7a271dafb584991da39554a89
  4. Affected versionversion=6c6dd5802c2d6769fa589c0e8de54299def199a7 <98d3be34c9153eceadb56de50d9f9347e88d86e4
  5. Affected versionversion=6c6dd5802c2d6769fa589c0e8de54299def199a7 <aa3e0db35a60002fb34ef0e4ad203aa59fd00203
  6. Affected versionversion=6c6dd5802c2d6769fa589c0e8de54299def199a7 <b04f06fc0243600665b3b50253869533b7938468
  7. Affected versionversion=6c6dd5802c2d6769fa589c0e8de54299def199a7 <c5f5b813e546f7fe133539c3d7a5086cc8dd2aa1
  8. Affected versionversion=6c6dd5802c2d6769fa589c0e8de54299def199a7 <f8024f12752e32ffbbf59e1c09d949f977ff743f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.8; version=6c6dd5802c2d6769fa589c0e8de54299def199a7 <801d64177faaec184cee1e1aa4d8487df1364a54; version=6c6dd5802c2d6769fa589c0e8de54299def199a7 <85e81103033324d7a271dafb584991da39554a89; version=6c6dd5802c2d6769fa589c0e8de54299def199a7 <98d3be34c9153eceadb56de50d9f9347e88d86e4; version=6c6dd5802c2d6769fa589c0e8de54299def199a7 <aa3e0db35a60002fb34ef0e4ad203aa59fd00203; version=6c6dd5802c2d6769fa589c0e8de54299def199a7 <b04f06fc0243600665b3b50253869533b7938468; version=6c6dd5802c2d6769fa589c0e8de54299def199a7 <c5f5b813e546f7fe133539c3d7a5086cc8dd2aa1; version=6c6dd5802c2d6769fa589c0e8de54299def199a7 <f8024f12752e32ffbbf59e1c09d949f977ff743f

Published CVSS scores

7.8OracleCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.0Linux CNACVSS: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

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-416Use After Free

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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