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Vulnerabilities

Vulnerability · CVE-2022-2586

Linux Kernel Use-After-Free Vulnerability

Published Jan 8, 2024 · catalog updated Oct 14, 2026 · Linux Kernel

Patch now

CVE-2022-2586 is in the CISA known-exploited catalog, due Jul 17, 2024. Confirm Linux Kernel against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High7.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
10.20%
Remediation
Remediation guidance
Affected products
cpe canonical/ubuntu linux · cpe linux/linux kernel · cpe siemens/simatic s7-1500 tm mfp firmware · cpe siemens/sinec os · vendor Linux Kernel

It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-after-free once that table was deleted.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe canonical/ubuntu linux14.04
  • cpe linux/linux kernelversion unspecified
  • cpe siemens/simatic s7-1500 tm mfp firmwareversion unspecified
  • cpe siemens/sinec osversion unspecified
  • vendor Linux Kernelversion unspecified

How to fix CVE-2022-2586

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2022-2586 is in the CISA known-exploited catalog, due Jul 17, 2024. Confirm Linux Kernel against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with canonical/ubuntu linux 14.04. Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

What should an analyst verify?

CWE-416: Use After Free. EPSS 10.20%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 8, 2024 · Catalog

    Detected

    It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-after-free once that table was deleted.

  2. Jun 26, 2024 · CISA KEV

    Known exploited

    Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

  3. Jul 17, 2024 · CISA KEV

    Remediation due

    Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

  4. Aug 20, 2026 · Catalog

    Updated

    It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-after-free once that table was deleted.

  5. Oct 14, 2026 · NIST NVD

    Updated

    It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-after-free once that table was deleted.

  6. Oct 14, 2026 · NIST NVD

    Updated

    It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-after-free once that table was deleted.

Sources

  • CISA KEVConfirmed exploitationCVE-2022-2586

    Linux Kernel contains a use-after-free vulnerability in the nft_object, allowing local attackers to escalate privileges.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2022-2586

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-2586

    30-day exploitation probability 10.2%

    first.org
  • NIST NVDVulnerability recordCVE-2022-2586

    It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-after-free once that table was deleted.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2022-2586

    Linux Kernel contains a use-after-free vulnerability in the nft_object, allowing local attackers to escalate privileges.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.