CVE-2024-22386

Kernel panic via unlocked CRTC event access

Published Feb 5, 2024 · Updated Aug 1, 2024

A race condition in the Linux kernel before 6.6-rc1 allows local users to trigger a kernel panic through Exynos DRM display teardown. exynos_drm_crtc_atomic_disable() tests crtc->state->event without event_lock, allowing another thread to clear it before drm_crtc_send_vblank_event() dereferences it. Low-privileged local access and an enabled Exynos DRM driver are required; successful exploitation interrupts the host without reported data disclosure or modification.

CVSS severity5.3
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A race condition in the Linux kernel before 6.6-rc1 allows local users to trigger a kernel panic through Exynos DRM display teardown. exynos_drm_crtc_atomic_disable() tests crtc->state->event without event_lock, allowing another thread to clear it before drm_crtc_send_vblank_event() dereferences it. Low-privileged local access and an enabled Exynos DRM driver are required; successful exploitation interrupts the host without reported data disclosure or modification.

The record

CVE
CVE-2024-22386
Published
Feb 5, 2024
Updated
Aug 1, 2024
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-362, CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record 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=v4.11-rc1 <v6.6-rc1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=v4.11-rc1 <v6.6-rc1

Published CVSS scores

4.7NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
5.3OpenAnolisCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H
4.7SUSECVSS:3.1/AV:L/AC:H/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 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-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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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