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CVE-2022-2586

Linux Kernel Use-After-Free

5.3 MEDIUMActively exploited (CISA KEV)Public exploitEPSS 10.2%
  1. Published8 Jan 2024
  2. Added to CISA KEV26 Jun 2024
  3. Remediation due17 Jul 2024
Actively exploited (CISA KEV)

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

Added to KEV: 26 Jun 2024Federal remediation due: 17 Jul 2024

Description

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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityHigh
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityHigh
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H

Affected products

Canonical Ubuntu Linux14.04 · 16.04 · 18.04 · 20.04
Linux Kernel≥ 3.16 < 4.14.316 · ≥ 4.15 < 4.19.256 · ≥ 4.20 < 5.4.211 · ≥ 5.11 < 5.15.61

Remediation

Fixed in
Linux Kernel≥ 4.14.316

References

and 5 more references

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Frequently asked

Is CVE-2022-2586 being actively exploited?

Yes. CVE-2022-2586 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 26 Jun 2024.

How severe is CVE-2022-2586?

CVE-2022-2586 has a CVSS 3.1 base score of 5.3, rated medium. EPSS estimates a 10.2% probability of exploitation.

Which products are affected by CVE-2022-2586?

Affected products include Canonical Ubuntu Linux, Linux Kernel.

How do I fix CVE-2022-2586?

Upgrade affected software to a fixed version, for example Linux Kernel 4.14.316 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2022-2586 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.