{"id":"CVE-2022-32250","title":"net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.","summary":"net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-416"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 4.1, < 4.9.318","linux_kernel >= 4.10, < 4.14.283","linux_kernel >= 4.15, < 4.19.247","linux_kernel >= 4.20, < 5.4.198","linux_kernel >= 5.5, < 5.10.120","linux_kernel >= 5.11, < 5.15.45","linux_kernel >= 5.16, < 5.17.13","linux_kernel >= 5.18, < 5.18.2","fedora = 35","fedora = 36","debian_linux = 9.0","debian_linux = 10.0","h300s_firmware","h500s_firmware","h700s_firmware","h410s_firmware","h410c_firmware"],"patched":["linux_kernel 5.18.2"],"published":"2022-06-02","updated":"2026-10-14","sourceUpdated":"2026-10-14T17:17:40.140","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-32250","references":[{"url":"http://www.openwall.com/lists/oss-security/2022/06/03/1","label":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2022/06/04/1","label":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2022/06/20/1","label":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2022/07/03/5","label":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2022/07/03/6","label":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2022/08/25/1","label":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2022/09/02/9","label":"cve@mitre.org"},{"url":"https://blog.theori.io/research/CVE-2022-32250-linux-kernel-lpe-2022/","label":"cve@mitre.org"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2092427","label":"cve@mitre.org"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/net/netfilter?id=520778042ccca019f3ffa136dd0ca565c486cedd","label":"cve@mitre.org"},{"url":"https://github.com/theori-io/CVE-2022-32250-exploit","label":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO6Y3TC4WUUNKRP7OQA26OVTZTPCS6F2/","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UIZTJOJCVVEJVOQSCHE6IJQKMPISHQ5L/","label":"cve@mitre.org"},{"url":"https://security.netapp.com/advisory/ntap-20220715-0005/","label":"cve@mitre.org"},{"url":"https://www.debian.org/security/2022/dsa-5161","label":"cve@mitre.org"},{"url":"https://www.debian.org/security/2022/dsa-5173","label":"cve@mitre.org"},{"url":"https://www.openwall.com/lists/oss-security/2022/05/31/1","label":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2022/06/03/1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2022/06/04/1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2022/06/20/1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2022/07/03/5","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2022/07/03/6","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2022/08/25/1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2022/09/02/9","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://blog.theori.io/research/CVE-2022-32250-linux-kernel-lpe-2022/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2092427","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/net/netfilter?id=520778042ccca019f3ffa136dd0ca565c486cedd","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/theori-io/CVE-2022-32250-exploit","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO6Y3TC4WUUNKRP7OQA26OVTZTPCS6F2/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UIZTJOJCVVEJVOQSCHE6IJQKMPISHQ5L/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20220715-0005/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2022/dsa-5161","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2022/dsa-5173","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.openwall.com/lists/oss-security/2022/05/31/1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-794697.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","exploit-available","cve.org"],"epss":0.02914,"epssPercentile":0.86908,"exploits":{"github":8,"githubRepos":["https://github.com/theori-io/CVE-2022-32250-exploit","https://github.com/ysanatomic/CVE-2022-32250-LPE","https://github.com/Decstor5/2022-32250LPE"],"checkedAt":"2026-10-23T21:41:44.047Z"},"exploitAvailable":true,"ingestedAt":"2026-10-14T17:44:53.598Z","slug":"CVE-2022-32250","body":"## Overview\n\nnet/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.\n\n## Affected\n\n- `linux_kernel >= 4.1, < 4.9.318`\n- `linux_kernel >= 4.10, < 4.14.283`\n- `linux_kernel >= 4.15, < 4.19.247`\n- `linux_kernel >= 4.20, < 5.4.198`\n- `linux_kernel >= 5.5, < 5.10.120`\n- `linux_kernel >= 5.11, < 5.15.45`\n- `linux_kernel >= 5.16, < 5.17.13`\n- `linux_kernel >= 5.18, < 5.18.2`\n- `fedora = 35`\n- `fedora = 36`\n- `debian_linux = 9.0`\n- `debian_linux = 10.0`\n- `h300s_firmware`\n- `h500s_firmware`\n- `h700s_firmware`\n- `h410s_firmware`\n- `h410c_firmware`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 5.18.2`","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":42.9,"likelihood":0.6,"exploitation":12,"ransomware":0},"changes":[]}