{"id":"CVE-2021-23134","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-23134","generatedAt":"2026-10-27T21:20:25.382Z","title":"Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.4 allows local attackers to elevate their privileges.","description":"Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.4 allows local attackers to elevate their privileges. In typical configurations, the issue can only be triggered by a privileged local user with the CAP_NET_RAW capability.","published":"2021-05-12T23:15:08.000Z","lastModified":"2026-07-30T19:36:38.000Z","status":"Analyzed","sourceIdentifier":"psirt@paloaltonetworks.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":["netapp/cloud backup","netapp/h300s firmware","netapp/h500s firmware","netapp/h700s firmware","netapp/h410s firmware","netapp/h410c firmware","netapp/solidfire baseboard management controller firmware","linux/linux kernel","fedoraproject/fedora","debian/debian linux"],"epss":{"score":0.00375,"percentile":0.31192,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=c61760e6940d","tags":["Mailing List","Patch","Vendor Advisory"],"source":"psirt@paloaltonetworks.com"},{"url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html","tags":["Mailing List","Third Party Advisory"],"source":"psirt@paloaltonetworks.com"},{"url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html","tags":["Mailing List","Third Party Advisory"],"source":"psirt@paloaltonetworks.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZYORWNQIHNWRFYRDXBWYWBYM46PDZEN/","tags":["Third Party Advisory"],"source":"psirt@paloaltonetworks.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QALNQT4LJFVSSA3MWCIECVY4AFPP4X77/","tags":["Third Party Advisory"],"source":"psirt@paloaltonetworks.com"},{"url":"https://security.netapp.com/advisory/ntap-20210625-0007/","tags":["Third Party Advisory"],"source":"psirt@paloaltonetworks.com"},{"url":"https://www.openwall.com/lists/oss-security/2021/05/11/4","tags":["Mailing List","Patch","Third Party Advisory"],"source":"psirt@paloaltonetworks.com"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=c61760e6940d","tags":["Mailing List","Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZYORWNQIHNWRFYRDXBWYWBYM46PDZEN/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QALNQT4LJFVSSA3MWCIECVY4AFPP4X77/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20210625-0007/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.openwall.com/lists/oss-security/2021/05/11/4","tags":["Mailing List","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-23134","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."}