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Redhat.comRH:CVE-2023-46813

HistoryOct 30, 2023 - 11:28 a.m.

CVE-2023-46813

2023-10-3011:28:42

redhat.com

access.redhat.com

buffer overflow

null pointer dereference

linux kernel

sev

amd

local user

crash

escalate privileges

mitigation

red hat product security.

7 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.9 High

AI Score

Confidence

High

3.5 Low

CVSS2

Access Vector

LOCAL

Access Complexity

HIGH

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:H/Au:S/C:P/I:P/A:P

0.0004 Low

EPSS

Percentile

5.2%

JSON

A buffer overflow and null pointer dereference flaw was found in the Linux kernel’s Secure Encrypted Virtualization (SEV) implementation for AMD functionality. This issue occurs when a user in SEV guest VM accesses MMIO registers, which could allow a local user to crash the system or escalate their privileges on the system.

Mitigation

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.