CVE-2023-3812

HIGH

Linux Kernel 4.15-4.19.265 - Use-After-Free in TUN/TAP Device Driver

Title source: llm
STIX 2.1

Description

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.

References (26)

Core 26
Core References
Third Party Advisory, VDB Entry vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:6799
Third Party Advisory, VDB Entry vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:6813
Third Party Advisory, VDB Entry vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:7370
Third Party Advisory, VDB Entry vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:7379
Third Party Advisory, VDB Entry vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:7382
Third Party Advisory, VDB Entry vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:7389
Third Party Advisory, VDB Entry vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:7411
Third Party Advisory, VDB Entry vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:7418
Third Party Advisory, VDB Entry vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:7548
Third Party Advisory, VDB Entry vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:7549
Third Party Advisory, VDB Entry vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:7554
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0340
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0378
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0412
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0461
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0554
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0562
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0563
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0575
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0593
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:1961
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:2006
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:2008
Third Party Advisory vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2023-3812
Issue Tracking, Patch, Third Party Advisory issue-tracking x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2224048

Scores

CVSS v3 7.8
EPSS 0.0001
EPSS Percentile 0.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-416 CWE-787
Status published
Products (3)
linux/linux_kernel 4.15 - 4.19.265
redhat/enterprise_linux 8.0
redhat/enterprise_linux 9.0
Published Jul 24, 2023
Tracked Since Feb 18, 2026