CVE-2023-0468

Kernel: use-after-free in io_uring poll events due to race condition

Published Jan 25, 2023 CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Description
A use-after-free flaw was found in io_uring/poll.c in io_poll_check_events in the io_uring subcomponent in the Linux Kernel due to a race condition of poll_refs. This flaw may cause a NULL pointer dereference.

Analysis

No analysis available yet

Remediation

No remediation available yet

Tracking

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Advisories

Source ID Title
Ubuntu USN Ubuntu USN USN-5912-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5935-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5938-1 Linux kernel (GKE) vulnerabilities
Ubuntu USN Ubuntu USN USN-5941-1 Linux kernel (KVM) vulnerabilities
Ubuntu USN Ubuntu USN USN-5962-1 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-6024-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6071-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-6072-1 Linux kernel (OEM) vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Apr 1, 2025, 3:06 PM
Reserved
Jan 24, 2023, 12:00 AM
Status
Modified
Published
Jan 26, 2023, 9:18 PM
Modified
Jun 17, 2026, 5:25 AM
Severity
Low
Public date
Nov 22, 2022, 6:30 AM