Medium
Security advisory
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 flaw allows a local, unprivileged user to crash the system, causing a denial of service.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2022-3586
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 01:26 UTC · Revision 1
Source evidence
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 flaw allows a local, unprivileged user to crash the system, causing a denial of service.
osv:CVE-2022-3586
Complete source record
{
"id": "eeb5b8cdebb21374d35e0b0797164463c44c4bf8d6496d659410dddaf7bbaeac",
"url": "https://osv.dev/vulnerability/CVE-2022-3586",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2022-3586",
"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 flaw allows a local, unprivileged user to crash the system, causing a denial of service.",
"evidence": "osv:CVE-2022-3586",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2022-3586",
"aliases": [
"CVE-2022-3586"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/torvalds/linux",
"type": "GIT",
"events": [
{
"introduced": "4fe89d07dcc2804c8b562f6c7896a45643d34b2f"
},
{
"fixed": "9efd23297cca"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "Fixed in kernel v6.0"
},
{
"last_affected": "Fixed in kernel v6.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
},
{
"range": [
{
"fixed": "9efd23297cca"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"Fixed in kernel v6.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-3586.json"
}
}
],
"modified": "2026-10-28T02:30:32.623428926Z",
"provider": "osv",
"references": [
"https://cert-portal.siemens.com/productcert/html/ssa-794697.html",
"https://cert-portal.siemens.com/productcert/html/ssa-831302.html",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/3xxx/CVE-2022-3586.json",
"https://nvd.nist.gov/vuln/detail/CVE-2022-3586",
"https://www.zerodayinitiative.com/advisories/upcoming/",
"https://github.com/torvalds/linux/commit/9efd23297cca",
"https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html"
],
"provider_metadata": {
"cwe_ids": [
"CWE-416"
],
"cna_assigner": "redhat",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/3xxx/CVE-2022-3586.json"
}
},
"related_cves": [
{
"value": "CVE-2022-3586",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 499440,
"published_at": "2022-10-19T00:00:00+00:00"
}