CVE-2022-4744

high

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

https://security.netapp.com/advisory/ntap-20230526-0009/

https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html

https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=158b515f703e

http://packetstormsecurity.com/files/171912/CentOS-Stream-9-Missing-Kernel-Security-Fix.html

Details

Source: Mitre, NVD

Published: 2023-03-30

Updated: 2023-11-07

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High