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ubuntucveUbuntu.comUB:CVE-2022-4744
HistoryMar 30, 2023 - 12:00 a.m.

CVE-2022-4744

2023-03-3000:00:00
ubuntu.com
ubuntu.com
18
cve-2022-4744
linux kernel
tun/tap
device driver
local privilege escalation
double-free flaw
register_netdevice function

CVSS3

7.8

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

EPSS

0

Percentile

5.1%

A double-free flaw was found in the Linux kernel’s TUN/TAP device driver
functionality in how a user registers the device when the
register_netdevice function fails (NETDEV_REGISTER notifier). This flaw
allows a local user to crash or potentially escalate their privileges on
the system.

OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchlinux-oem-5.14< 5.14.0-1022.24UNKNOWN

CVSS3

7.8

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

EPSS

0

Percentile

5.1%