A double free bug in packet_set_ring() in net/packet... · CVE-2021-22600 · GitHub Advisory Database · GitHub

A double free bug in packet_set_ring() in net/packet...

High severity Unreviewed Published Jan 27, 2022 to the GitHub Advisory Database • Updated Feb 3, 2023

Package

No package listed— Suggest a package

Affected versions

Unknown

Patched versions

Unknown

Description

A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755

References

Published by the National Vulnerability Database

Jan 26, 2022

Published to the GitHub Advisory Database Jan 27, 2022

Last updated Feb 3, 2023

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