{"id":"CVE-2022-2588","title":"It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the hashtable before freeing it if its handle had the value 0.","summary":"It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the hashtable before freeing it if its handle had the value 0.","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H","cwe":["CWE-416","CWE-415"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel < 4.9.326","linux_kernel >= 4.10, < 4.14.291","linux_kernel >= 4.15, < 4.19.256","linux_kernel >= 4.20, < 5.4.211","linux_kernel >= 5.5, < 5.10.137","linux_kernel >= 5.11, < 5.15.61","linux_kernel >= 5.16, < 5.18.18","linux_kernel >= 5.19, < 5.19.2","ubuntu_linux = 14.04","ubuntu_linux = 16.04","ubuntu_linux = 18.04","ubuntu_linux = 20.04","ubuntu_linux = 22.04"],"patched":["linux_kernel 5.19.2"],"published":"2024-01-08","updated":"2026-10-14","sourceUpdated":"2026-10-14T14:17:21.670","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-2588","references":[{"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2588","label":"security@ubuntu.com"},{"url":"https://github.com/Markakd/CVE-2022-2588","label":"security@ubuntu.com"},{"url":"https://lore.kernel.org/netdev/20220809170518.164662-1-cascardo@canonical.com/T/#u","label":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5557-1","label":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5560-1","label":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5560-2","label":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5562-1","label":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5564-1","label":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5565-1","label":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5566-1","label":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5567-1","label":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5582-1","label":"security@ubuntu.com"},{"url":"https://ubuntu.com/security/notices/USN-5588-1","label":"security@ubuntu.com"},{"url":"https://www.openwall.com/lists/oss-security/2022/08/09/6","label":"security@ubuntu.com"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-22-1117/","label":"security@ubuntu.com"},{"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2588","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/Markakd/CVE-2022-2588","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lore.kernel.org/netdev/20220809170518.164662-1-cascardo@canonical.com/T/#u","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5557-1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5560-1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5560-2","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5562-1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5564-1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5565-1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5566-1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5567-1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5582-1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/security/notices/USN-5588-1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.openwall.com/lists/oss-security/2022/08/09/6","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-22-1117/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-419740.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-769027.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-794697.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-831302.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","exploit-available","cve.org"],"epss":0.05871,"epssPercentile":0.93167,"exploits":{"github":9,"githubRepos":["https://github.com/Markakd/CVE-2022-2588","https://github.com/ASkyeye/2022-LPE-UAF","https://github.com/pirenga/2022-LPE-UAF"],"checkedAt":"2026-10-27T16:41:27.194Z"},"exploitAvailable":true,"zeroDay":true,"ingestedAt":"2026-10-14T15:36:13.930Z","ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2024-02-06T20:44:16.386267Z"},"slug":"CVE-2022-2588","body":"## Overview\n\nIt was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the hashtable before freeing it if its handle had the value 0.\n\n## Affected\n\n- `linux_kernel < 4.9.326`\n- `linux_kernel >= 4.10, < 4.14.291`\n- `linux_kernel >= 4.15, < 4.19.256`\n- `linux_kernel >= 4.20, < 5.4.211`\n- `linux_kernel >= 5.5, < 5.10.137`\n- `linux_kernel >= 5.11, < 5.15.61`\n- `linux_kernel >= 5.16, < 5.18.18`\n- `linux_kernel >= 5.19, < 5.19.2`\n- `ubuntu_linux = 14.04`\n- `ubuntu_linux = 16.04`\n- `ubuntu_linux = 18.04`\n- `ubuntu_linux = 20.04`\n- `ubuntu_linux = 22.04`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 5.19.2`","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":29.2,"likelihood":1.2,"exploitation":25,"ransomware":0},"changes":[]}