CVE-2022-2586
KEVLinux Kernel Use-After-Free Vulnerability
Description
Linux Kernel contains a use-after-free vulnerability in the nft_object, allowing local attackers to escalate privileges.
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 vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:HPublishedJan 8, 2024
Last modifiedOct 14, 2026
Added to KEVJun 26, 2024
Remediation dueJul 17, 2024
References
- cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2586Third Party Advisory
- lore.kernel.org/netfilter-devel/20220809170148.164591-1-cascardo@canonical.com/T/Mailing ListPatch
- ubuntu.com/security/notices/USN-5557-1Third Party Advisory
- ubuntu.com/security/notices/USN-5560-1Third Party Advisory
- ubuntu.com/security/notices/USN-5560-2Third Party Advisory
- ubuntu.com/security/notices/USN-5562-1Third Party Advisory
- ubuntu.com/security/notices/USN-5564-1Third Party Advisory
- ubuntu.com/security/notices/USN-5565-1Third Party Advisory
- ubuntu.com/security/notices/USN-5566-1Third Party Advisory
- ubuntu.com/security/notices/USN-5567-1Third Party Advisory
- ubuntu.com/security/notices/USN-5582-1Third Party Advisory
- openwall.com/lists/oss-security/2022/08/09/5Mailing List
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58
Risk assessment · Medium
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 832 days
- CVSS
- 5.3 MEDIUM
- EPSS (30-day exploit probability)
- 10.2% · top 4% of all CVEs
- Weakness
- CWE-416
Recommended actions
- 1.Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.