{"id":"CVE-2022-2586","url":"https://www.cyber-defence.io/tools/cve/CVE-2022-2586","generatedAt":"2026-10-31T10:22:30.242Z","title":"Linux Kernel Use-After-Free Vulnerability","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.","published":"2024-01-08T18:15:45.000Z","lastModified":"2026-10-14T18:25:45.000Z","status":"Analyzed","sourceIdentifier":"security@ubuntu.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-416"],"affected":["siemens/simatic s7-1500 tm mfp firmware","siemens/sinec os","linux/linux kernel","canonical/ubuntu linux"],"epss":{"score":0.10202,"percentile":0.95664,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2024-06-26","dueDate":"2024-07-17","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.\nThis vulnerability affects a common open-source component, third-party library, or a protocol used by different products. For more information, please see: https://seclists.org/oss-sec/2022/q3/131;  https://nvd.nist.gov/vuln/detail/CVE-2022-2586"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 17 July 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2586","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://lore.kernel.org/netfilter-devel/20220809170148.164591-1-cascardo@canonical.com/T/#t","tags":["Mailing List","Patch"],"source":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5557-1","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5560-1","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5560-2","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5562-1","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5564-1","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5565-1","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5566-1","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5567-1","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5582-1","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://www.openwall.com/lists/oss-security/2022/08/09/5","tags":["Mailing List"],"source":"security@ubuntu.com"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-22-1118/","tags":["Third Party Advisory","VDB Entry"],"source":"security@ubuntu.com"},{"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2586","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lore.kernel.org/netfilter-devel/20220809170148.164591-1-cascardo@canonical.com/T/#t","tags":["Mailing List","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5557-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5560-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5560-2","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5562-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5564-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5565-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5566-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5567-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5582-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.openwall.com/lists/oss-security/2022/08/09/5","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.vicarius.io/vsociety/posts/use-after-free-vulnerability-linked-chain-between-nft-tables-cve-2022-2586","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-22-1118/","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-794697.html","tags":["Third Party Advisory"],"source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-806742.html","tags":["Third Party Advisory"],"source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-2586","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-2586","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}