CVE-2023-3812 Kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags

2023-07-2415:19:21

CWE-787

redhat

www.cve.org

cve-2023-3812

kernel

tun/tap

driver

oversize packet

memory access

privilege escalation

linux

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.8 High

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

17.6%

JSON

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.

CNA Affected

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