CVE-2024-47751

Kernel memory corruption via Kirin PCIe slot overflow

Published Oct 21, 2024 · Updated May 11, 2026

Out-of-bounds write in Linux 5.16 and later before branch fixes allows local users to corrupt memory during Kirin PCIe port parsing. kirin_pcie_parse_port() increments num_slots before enforcing the gpio_id_reset array limit, allowing the next parsed slot to index beyond MAX_PCI_SLOTS. Reachability requires the Kirin PCIe controller path and enough parsed ports to reach the fixed-size boundary; no demonstrated exploit is documented.

CVSS severity7.8
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

Out-of-bounds write in Linux 5.16 and later before branch fixes allows local users to corrupt memory during Kirin PCIe port parsing. kirin_pcie_parse_port() increments num_slots before enforcing the gpio_id_reset array limit, allowing the next parsed slot to index beyond MAX_PCI_SLOTS. Reachability requires the Kirin PCIe controller path and enough parsed ports to reach the fixed-size boundary; no demonstrated exploit is documented.

The record

CVE
CVE-2024-47751
Published
Oct 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-120, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 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

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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=5.16
  2. Affected versionversion=b22dbbb24571c052364f476381dbac110bdca4d5 <6dcc5b49d6607a741a14122bf3105f3ac50d259e
  3. Affected versionversion=b22dbbb24571c052364f476381dbac110bdca4d5 <95248d7497bcbfe7deed4805469c6ff6ddd7f9d1
  4. Affected versionversion=b22dbbb24571c052364f476381dbac110bdca4d5 <a5f795f9412854df28e66679c5e6b68b0b79c229
  5. Affected versionversion=b22dbbb24571c052364f476381dbac110bdca4d5 <aeb0335971806e15ac91e838ca471936c8e7efd5
  6. Affected versionversion=b22dbbb24571c052364f476381dbac110bdca4d5 <c500a86693a126c9393e602741e348f80f1b0fc5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.16; version=b22dbbb24571c052364f476381dbac110bdca4d5 <6dcc5b49d6607a741a14122bf3105f3ac50d259e; version=b22dbbb24571c052364f476381dbac110bdca4d5 <95248d7497bcbfe7deed4805469c6ff6ddd7f9d1; version=b22dbbb24571c052364f476381dbac110bdca4d5 <a5f795f9412854df28e66679c5e6b68b0b79c229; version=b22dbbb24571c052364f476381dbac110bdca4d5 <aeb0335971806e15ac91e838ca471936c8e7efd5; version=b22dbbb24571c052364f476381dbac110bdca4d5 <c500a86693a126c9393e602741e348f80f1b0fc5

Published CVSS scores

7.8Canonical UbuntuCVSS:3.1/AV:L/AC:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1068Exploitation for Privilege Escalation

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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