A double-free flaw was found in the Linux kernel’s TUN... · CVE-2022-4744 · GitHub Advisory Database · GitHub

A double-free flaw was found in the Linux kernel’s TUN...

High severity Unreviewed Published Jul 6, 2023 to the GitHub Advisory Database • Updated Apr 4, 2024

Package

No package listed— Suggest a package

Affected versions

Unknown

Patched versions

Unknown

Description

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.

References

Published by the National Vulnerability Database

Mar 30, 2023

Published to the GitHub Advisory Database Jul 6, 2023

Last updated Apr 4, 2024

Severity

High

7.8

/ 10

CVSS base metrics

Attack vector

Local

Attack complexity

Low

Privileges required

Low

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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