Is there a public exploit for CVE-2023-3812?

No public exploit for CVE-2023-3812 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2023-3812?

CVE-2023-3812 scores CVSS 7.8 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.34%.

What does CVE-2023-3812 affect?

CVE-2023-3812 affects Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 8.6 Extended Update Support, Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, Red Hat Virtualization 4 for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.2 Advanced Update Support.

7.8 High

An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious…

CVE-2023-3812

An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.

Assessment

CVSS: 7.8 (v3.1)
Severity: High
EPSS: 0.34% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 24 July 2023
Last updated: 7 November 2026
Affected: Red Hat · Red Hat Enterprise Linux 8 · Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions · Red Hat Enterprise Linux 8.2 Advanced Update Support · Red Hat Enterprise Linux 8.2 Telecommunications Update Service
Assigner: redhat

CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

At the source

EUVD (ENISA)

References

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