CVE-2012-0810

Kernel panic via per-CPU debug stack reuse

Published Feb 12, 2020 · Updated Aug 6, 2024

Denial of service in the Linux Kernel before 3.3 allows local users to trigger a kernel panic through crafted int3 lock contention. The x86-64 int3 handler enables interrupts while using a per-CPU debug stack, allowing a contended lock to schedule the task out and another task to reuse and corrupt that stack. Local unprivileged execution on an affected real-time kernel is required, and successful exploitation crashes the host.

CVSS severity5.5
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux Kernel before 3.3 allows local users to trigger a kernel panic through crafted int3 lock contention. The x86-64 int3 handler enables interrupts while using a per-CPU debug stack, allowing a contended lock to schedule the task out and another task to reuse and corrupt that stack. Local unprivileged execution on an affected real-time kernel is required, and successful exploitation crashes the host.

The record

CVE
CVE-2012-0810
Published
Feb 12, 2020
Updated
Aug 6, 2024
Vendor
Linux Foundation
Product
Linux Kernel
Classifications
CWE-400, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 12, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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?

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  1. Affected versionversion=before 3.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Linux Foundation · Linux Kernelversion=before 3.3

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.9NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:C

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-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service

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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