CVE-2022-49886 Vulnerability Analysis & Exploit Details

CVE-2022-49886
Vulnerability Scoring

Analysis In Progress
Analysis In Progress

Attack Complexity Details

  • Attack Complexity:
    Attack Complexity Analysis In Progress
  • Attack Vector:
    Attack Vector Under Analysis
  • Privileges Required: None
    No authentication is required for exploitation.
  • Scope:
    Impact is confined to the initially vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2022-49886 Details

Status: Awaiting Analysis

Last updated: 🕜 02 May 2025, 13:52 UTC
Originally published on: 🕒 01 May 2025, 15:16 UTC

CVSS Release:

CVE-2022-49886 Vulnerability Summary

CVE-2022-49886: In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Panic on bad configs that #VE on "private" memory access All normal kernel memory is "TDX private memory". This includes everything from kernel stacks to kernel text. Handling exceptions on arbitrary accesses to kernel memory is essentially impossible because they can happen in horribly nasty places like kernel entry/exit. But, TDX hardware can theoretically _deliver_ a virtualization exception (#VE) on any access to private memory. But, it's not as bad as it sounds. TDX can be configured to never deliver these exceptions on private memory with a "TD attribute" called ATTR_SEPT_VE_DISABLE. The guest has no way to *set* this attribute, but it can check it. Ensure ATTR_SEPT_VE_DISABLE is set in early boot. panic() if it is unset. There is no sane way for Linux to run with this attribute clear so a panic() is appropriate. There's small window during boot before the check where kernel has an early #VE handler. But the handler is only for port I/O and will also panic() as soon as it sees any other #VE, such as a one generated by a private memory access. [ dhansen: Rewrite changelog and rebase on new tdx_parse_tdinfo(). Add Kirill's tested-by because I made changes since he wrote this. ]

Assessing the Risk of CVE-2022-49886

Access Complexity Graph

The exploitability of CVE-2022-49886 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2022-49886

No exploitability data is available for CVE-2022-49886.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2022-49886, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2022-49886, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2022-49886 does not compromise confidentiality.
  • Integrity: None
    CVE-2022-49886 does not impact data integrity.
  • Availability: None
    CVE-2022-49886 does not affect system availability.

CVE-2022-49886 References

External References

CWE Common Weakness Enumeration

Unknown

Protect Your Infrastructure against CVE-2022-49886: Combat Critical CVE Threats

Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.

Other 5 Recently Published CVEs Vulnerabilities

  • CVE-2025-4488 – A vulnerability was found in itsourcecode Gym Management System 1.0. It has been declared as critical. Affected by this vulnerability is an unknown...
  • CVE-2025-4487 – A vulnerability was found in itsourcecode Gym Management System 1.0. It has been classified as critical. Affected is an unknown function of the fil...
  • CVE-2025-4486 – A vulnerability was found in itsourcecode Gym Management System 1.0 and classified as critical. This issue affects some unknown processing of the f...
  • CVE-2025-4485 – A vulnerability has been found in itsourcecode Gym Management System 1.0 and classified as critical. This vulnerability affects unknown code of the...
  • CVE-2025-4484 – A vulnerability, which was classified as critical, was found in itsourcecode Gym Management System 1.0. This affects an unknown part of the file /a...