CVE-2023-1838

kernel: Possible use-after-free since the two fdget() during vhost_net_set_backend()

Published Apr 5, 2023 CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Description
A use-after-free flaw was found in vhost_net_set_backend in drivers/vhost/net.c in virtio network subcomponent in the Linux kernel due to a double fget. This flaw could allow a local attacker to crash the system, and could even lead to a kernel information leak problem.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Ubuntu USN Ubuntu USN USN-6740-1 Linux kernel vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:9
cpe:/o:redhat:enterprise_linux:9
Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Oct 8, 2026, 9:13 PM
Reserved
Apr 4, 2023, 12:00 AM
Status
Modified
Published
Apr 5, 2023, 7:15 PM
Modified
Oct 8, 2026, 10:17 PM
Severity
Moderate
Public date
May 16, 2022, 10:30 AM