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CVE Record

CVE-2012-0810: The int3 handler in the Linux kernel before 3.3 relies on a per-CPU debug stack, which allows local users t...

The int3 handler in the Linux kernel before 3.3 relies on a per-CPU debug stack, which allows local users to cause a denial of service (stack corruption and panic) via a crafted application that triggers certain lock contention.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a local Linux kernel denial-of-service issue. A user who can run code on an affected system may trigger stack corruption and a kernel panic, causing outage. The provided sources do not indicate data theft, remote access, or active exploitation.

Executive priority

Treat this as a legacy platform stability risk. It is not documented as remotely exploitable, but affected shared or multi-user systems could suffer outages from local code execution.

Technical view

Linux kernels before 3.3 used a per-CPU debug stack in the int3 handler. The CVE states local users can cause stack corruption and panic through a crafted application that triggers certain lock contention. No CVSS, CWE, or detailed affected distribution list is provided.

Likely exposure

Exposure is most likely on legacy Linux systems running kernels before 3.3, especially where untrusted local users, shell accounts, or shared workloads can execute applications.

Exploitation context

The source bundle does not show CISA KEV listing or other evidence of active exploitation. The described attack is local and denial-of-service focused; remote exploitation and privilege escalation are not supported by the provided evidence.

Researcher notes

Evidence is limited to the CVE description, Red Hat bug reference, and kernel commit references. The record lacks CVSS, CWE, and detailed distro backport status, so validation should focus on vendor kernel provenance rather than upstream version alone.

Mitigation direction

  • Inventory Linux systems for kernel versions before 3.3.
  • Upgrade affected systems to a vendor-supported patched kernel.
  • Check Linux distribution advisories, including Red Hat guidance, for backported fixes.
  • Reduce untrusted local code execution on systems that cannot be updated promptly.

Validation and detection

  • Confirm kernel versions across production, shared, and legacy hosts.
  • Verify whether vendor kernels include the referenced upstream stable-rt fixes.
  • Review crash or panic history on legacy Linux hosts for unexplained local-triggered outages.
  • Document any unsupported kernels and assign owners for remediation.
Prepared
Confidence
medium
Sources
5

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

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CVE-2012-0810 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Linux FoundationLinux kernelbefore 3.3Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.