CVE-2024-38548

Kernel crash via unchecked mode-allocation failure

Published Jun 19, 2024 · Updated May 11, 2026

NULL pointer dereference in the Cadence MHDP8546 DRM bridge in affected Linux releases allows local users to crash the kernel. cdns_mhdp_atomic_enable stores a failed drm_mode_duplicate allocation as current_mode and passes that NULL pointer to drm_mode_set_name. A low-privileged local user must reach bridge atomic enable while mode duplication fails; the resulting kernel fault interrupts service without reported data access or modification.

CVSS severity5.5
Medium
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

NULL pointer dereference in the Cadence MHDP8546 DRM bridge in affected Linux releases allows local users to crash the kernel. cdns_mhdp_atomic_enable stores a failed drm_mode_duplicate allocation as current_mode and passes that NULL pointer to drm_mode_set_name. A low-privileged local user must reach bridge atomic enable while mode duplication fails; the resulting kernel fault interrupts service without reported data access or modification.

The record

CVE
CVE-2024-38548
Published
Jun 19, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 19, 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=5.10
  2. Affected versionversion=fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b <32fb2ef124c3301656ac6c789a2ef35ef69a66da
  3. Affected versionversion=fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b <47889711da20be9b43e1e136e5cb68df37cbcc79
  4. Affected versionversion=fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b <85d1a27402f81f2e04b0e67d20f749c2a14edbb3
  5. Affected versionversion=fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b <89788cd9824c28ffcdea40232c458233353d1896
  6. Affected versionversion=fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b <935a92a1c400285545198ca2800a4c6c519c650a
  7. Affected versionversion=fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b <ca53b7efd4ba6ae92fd2b3085cb099c745e96965
  8. Affected versionversion=fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b <dcf53e6103b26e7458be71491d0641f49fbd5840

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.10; version=fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b <32fb2ef124c3301656ac6c789a2ef35ef69a66da; version=fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b <47889711da20be9b43e1e136e5cb68df37cbcc79; version=fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b <85d1a27402f81f2e04b0e67d20f749c2a14edbb3; version=fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b <89788cd9824c28ffcdea40232c458233353d1896; version=fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b <935a92a1c400285545198ca2800a4c6c519c650a; version=fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b <ca53b7efd4ba6ae92fd2b3085cb099c745e96965; version=fb43aa0acdfd600c75b8c877bdf9f6e9893ffc9b <dcf53e6103b26e7458be71491d0641f49fbd5840

Published CVSS scores

5.5CISA-ADPCVSS: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

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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-476NULL Pointer Dereference

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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