{"id":"CVE-2022-3586","title":"A flaw was found in the Linux kernel’s networking code","summary":"A flaw was found in the Linux kernel’s networking code. A use-after-free was found in the way the sch_sfb enqueue function used the socket buffer (SKB) cb field after the same SKB had been enqueued (and freed) into a child qdisc. This fl…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-416"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 2.6.39, <= 5.19","linux_kernel = 6.0","debian_linux = 10.0"],"published":"2022-10-19","updated":"2026-10-14","sourceUpdated":"2026-10-14T14:17:24.750","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-3586","references":[{"url":"https://github.com/torvalds/linux/commit/9efd23297cca","label":"secalert@redhat.com"},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html","label":"secalert@redhat.com"},{"url":"https://www.zerodayinitiative.com/advisories/upcoming/","label":"secalert@redhat.com"},{"url":"https://github.com/torvalds/linux/commit/9efd23297cca","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.zerodayinitiative.com/advisories/upcoming/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"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","cve.org"],"epss":0.00487,"epssPercentile":0.4096,"zeroDay":true,"ingestedAt":"2026-10-14T15:36:13.923Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2025-05-09T14:48:08.642083Z"},"slug":"CVE-2022-3586","body":"## Overview\n\nA flaw was found in the Linux kernel’s networking code. A use-after-free was found in the way the sch_sfb enqueue function used the socket buffer (SKB) cb field after the same SKB had been enqueued (and freed) into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing a denial of service.\n\n## Affected\n\n- `linux_kernel >= 2.6.39, <= 5.19`\n- `linux_kernel = 6.0`\n- `debian_linux = 10.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":30.3,"likelihood":0.1,"exploitation":25,"ransomware":0},"changes":[]}