CVE-2024-43823

Local kernel crash via missing Device Tree resource

Published Aug 17, 2024 · Updated May 11, 2026

NULL pointer dereference in the Linux Keystone PCI driver allows local users to crash affected kernels through a malformed Device Tree. The ks_pcie_setup_rc_app_regs() function dereferences the result of resource_list_first_type() without checking for NULL when IORESOURCE_MEM is absent. Local access and a Keystone PCI configuration with an erroneous Device Tree are required, and the resulting fault interrupts the host.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux Keystone PCI driver allows local users to crash affected kernels through a malformed Device Tree. The ks_pcie_setup_rc_app_regs() function dereferences the result of resource_list_first_type() without checking for NULL when IORESOURCE_MEM is absent. Local access and a Keystone PCI configuration with an erroneous Device Tree are required, and the resulting fault interrupts the host.

The record

CVE
CVE-2024-43823
Published
Aug 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 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=0f71c60ffd26943fa9646aa73ad7889ace116ce2 <0a6f1b5fe8ef8268aaa069035639968ceeea0a23
  2. Affected versionversion=0f71c60ffd26943fa9646aa73ad7889ace116ce2 <a231707a91f323af1e5d9f1722055ec2fc1c7775
  3. Affected versionversion=0f71c60ffd26943fa9646aa73ad7889ace116ce2 <bbba48ad67c53feea05936ea1e029dcca8057506
  4. Affected versionversion=0f71c60ffd26943fa9646aa73ad7889ace116ce2 <dbcdd1863ba2ec9b76ec131df25d797709e05597
  5. Affected versionversion=5.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0f71c60ffd26943fa9646aa73ad7889ace116ce2 <0a6f1b5fe8ef8268aaa069035639968ceeea0a23; version=0f71c60ffd26943fa9646aa73ad7889ace116ce2 <a231707a91f323af1e5d9f1722055ec2fc1c7775; version=0f71c60ffd26943fa9646aa73ad7889ace116ce2 <bbba48ad67c53feea05936ea1e029dcca8057506; version=0f71c60ffd26943fa9646aa73ad7889ace116ce2 <dbcdd1863ba2ec9b76ec131df25d797709e05597; version=5.10

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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