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ubuntucveUbuntu.comUB:CVE-2021-4158
HistoryDec 24, 2021 - 12:00 a.m.

CVE-2021-4158

2021-12-2400:00:00
ubuntu.com
ubuntu.com
16

6 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

1.4 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

MULTIPLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:L/AC:L/Au:M/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

31.6%

A NULL pointer dereference issue was found in the ACPI code of QEMU. A
malicious, privileged user within the guest could use this flaw to crash
the QEMU process on the host, resulting in a denial of service condition.

Bugs

Notes

Author Note
mdeslaur introduced in 6.0.0
OSVersionArchitecturePackageVersionFilename
ubuntu21.10noarchqemu< 1:6.0+dfsg-2expubuntu1.2UNKNOWN
ubuntu22.04noarchqemu< 1:6.2+dfsg-2ubuntu5UNKNOWN

6 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

1.4 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

MULTIPLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:L/AC:L/Au:M/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

31.6%