CVE-2022-3586

kernel: net scheduler use-after-free information disclosure vulnerability

Published Oct 19, 2022 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3173-1 linux-5.10 security update
EUVD EUVD EUVD-2022-42950 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.
Ubuntu USN Ubuntu USN USN-5790-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5791-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5791-2 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-5791-3 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-5792-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5792-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5793-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5793-2 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-5793-3 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5793-4 Linux kernel (IBM) vulnerabilities
Ubuntu USN Ubuntu USN USN-5815-1 Linux kernel (BlueField) vulnerabilities
Ubuntu USN Ubuntu USN USN-5877-1 Linux kernel (GKE) vulnerabilities
Ubuntu USN Ubuntu USN USN-6045-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6071-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-6124-1 Linux kernel (OEM) vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Oct 14, 2026, 1:51 PM
Reserved
Oct 18, 2022, 12:00 AM
Status
Modified
Published
Oct 19, 2022, 6:15 PM
Modified
Oct 14, 2026, 2:17 PM
Severity
Moderate
Public date
Aug 31, 2022, 12:00 AM