CVE-2021-47639 Vulnerability Analysis & Exploit Details

CVE-2021-47639
Vulnerability Scoring

7.8
/10
Very High Risk

Highly exploitable, CVE-2021-47639 poses a critical security risk that could lead to severe breaches.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2021-47639 Details

Status: Analyzed

Last updated: 🕠 24 Mar 2025, 17:47 UTC
Originally published on: 🕡 26 Feb 2025, 06:37 UTC

Time between publication and last update: 26 days

CVSS Release: version 3

CVSS3 Source

134c704f-9b21-4f2e-91b3-4a467353bcc0

CVSS3 Type

Secondary

CVSS3 Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2021-47639 Vulnerability Summary

CVE-2021-47639: In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Zap _all_ roots when unmapping gfn range in TDP MMU Zap both valid and invalid roots when zapping/unmapping a gfn range, as KVM must ensure it holds no references to the freed page after returning from the unmap operation. Most notably, the TDP MMU doesn't zap invalid roots in mmu_notifier callbacks. This leads to use-after-free and other issues if the mmu_notifier runs to completion while an invalid root zapper yields as KVM fails to honor the requirement that there must be _no_ references to the page after the mmu_notifier returns. The bug is most easily reproduced by hacking KVM to cause a collision between set_nx_huge_pages() and kvm_mmu_notifier_release(), but the bug exists between kvm_mmu_notifier_invalidate_range_start() and memslot updates as well. Invalidating a root ensures pages aren't accessible by the guest, and KVM won't read or write page data itself, but KVM will trigger e.g. kvm_set_pfn_dirty() when zapping SPTEs, and thus completing a zap of an invalid root _after_ the mmu_notifier returns is fatal. WARNING: CPU: 24 PID: 1496 at arch/x86/kvm/../../../virt/kvm/kvm_main.c:173 [kvm] RIP: 0010:kvm_is_zone_device_pfn+0x96/0xa0 [kvm] Call Trace: <TASK> kvm_set_pfn_dirty+0xa8/0xe0 [kvm] __handle_changed_spte+0x2ab/0x5e0 [kvm] __handle_changed_spte+0x2ab/0x5e0 [kvm] __handle_changed_spte+0x2ab/0x5e0 [kvm] zap_gfn_range+0x1f3/0x310 [kvm] kvm_tdp_mmu_zap_invalidated_roots+0x50/0x90 [kvm] kvm_mmu_zap_all_fast+0x177/0x1a0 [kvm] set_nx_huge_pages+0xb4/0x190 [kvm] param_attr_store+0x70/0x100 module_attr_store+0x19/0x30 kernfs_fop_write_iter+0x119/0x1b0 new_sync_write+0x11c/0x1b0 vfs_write+0x1cc/0x270 ksys_write+0x5f/0xe0 do_syscall_64+0x38/0xc0 entry_SYSCALL_64_after_hwframe+0x44/0xae </TASK>

Assessing the Risk of CVE-2021-47639

Access Complexity Graph

The exploitability of CVE-2021-47639 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-2021-47639

CVE-2021-47639 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

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-2021-47639, 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-2021-47639, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2021-47639 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: High
    CVE-2021-47639 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
  • Availability: High
    CVE-2021-47639 can disrupt system operations, potentially causing complete denial of service (DoS).

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.045% (probability of exploit)

EPSS Percentile: 18.4% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 81.6% of others.

CVE-2021-47639 References

External References

CWE Common Weakness Enumeration

CWE-416

Vulnerable Configurations

  • cpe:2.3:o:linux:linux_kernel:5.13:-:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.0-52:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.0-52:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.1:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.1:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.2:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.2:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.3:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.3:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.4:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.4:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.5:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.5:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.6:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.6:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.7:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.7:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.8:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.8:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.9:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.9:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.10:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.10:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.11:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.11:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.12:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.12:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.13:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.13:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.14:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.14:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.15:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.15:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.16:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.16:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.17:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.17:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.18:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.18:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13.19:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13.19:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc7:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.13:rc7:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.1:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.1:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.2:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.2:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.3:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.3:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.4:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.4:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.5:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.5:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.6:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.6:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.7:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.7:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.8:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.8:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.9:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.9:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.10:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.10:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.11:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.11:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.12:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.12:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.13:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.13:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.14:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.14:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.15:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.15:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.16:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.16:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.17:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.17:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.18:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.18:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.19:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.19:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.20:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.20:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14.21:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14.21:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14:rc1:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14:rc3:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14:rc4:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14:rc5:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.14:rc6:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.14:rc6:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.0:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.0:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.0-58:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.0-58:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.1:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.1:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.2:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.2:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.3:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.3:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.3:-:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.3:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.4:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.4:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.5:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.5:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.6:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.6:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.7:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.7:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.8:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.8:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.9:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.9:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.10:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.10:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.11:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.11:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.12:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.12:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.13:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.13:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.14:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.14:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.15:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.15:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.16:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.16:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.17:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.17:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.18:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.18:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.19:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.19:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.20:*:*:*:*:*:*:*
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  • cpe:2.3:o:linux:linux_kernel:5.15.21:*:*:*:*:*:*:*
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  • cpe:2.3:o:linux:linux_kernel:5.15.22:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.22:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.23:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.23:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.24:*:*:*:*:*:*:*
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  • cpe:2.3:o:linux:linux_kernel:5.15.25:*:*:*:*:*:*:*
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  • cpe:2.3:o:linux:linux_kernel:5.15.26:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.26:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.27:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.27:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.28:*:*:*:*:*:*:*
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  • cpe:2.3:o:linux:linux_kernel:5.15.29:*:*:*:*:*:*:*
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  • cpe:2.3:o:linux:linux_kernel:5.15.30:*:*:*:*:*:*:*
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  • cpe:2.3:o:linux:linux_kernel:5.15.31:*:*:*:*:*:*:*
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  • cpe:2.3:o:linux:linux_kernel:5.15.32:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.32:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16:-:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.1:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.1:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.2:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.2:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.3:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.3:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.4:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.4:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.5:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.5:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.6:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.6:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.7:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.7:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.8:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.8:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.9:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.9:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.10:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.10:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.11:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.11:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.12:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.12:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.13:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.13:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.14:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.14:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.15:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.15:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.16:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.16:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.17:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.17:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.16.18:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.16.18:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17:-:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17.1:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.17.1:*:*:*:*:*:*:*

Protect Your Infrastructure against CVE-2021-47639: Combat Critical CVE Threats

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