Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Local
0

CVE-2024-43873

Disclosure Date: August 21, 2024
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

In the Linux kernel, the following vulnerability has been resolved:

vhost/vsock: always initialize seqpacket_allow

There are two issues around seqpacket_allow:

  1. seqpacket_allow is not initialized when socket is
    created. Thus if features are never set, it will be
    read uninitialized.
  2. if VIRTIO_VSOCK_F_SEQPACKET is set and then cleared,
    then seqpacket_allow will not be cleared appropriately
    (existing apps I know about don’t usually do this but
    it’s legal and there’s no way to be sure no one relies
    on this).

To fix:

- initialize seqpacket_allow after allocation
- set it unconditionally in set_features

Add Assessment

No one has assessed this topic. Be the first to add your voice to the community.

CVSS V3 Severity and Metrics
Base Score:
7.8 High
Impact Score:
5.9
Exploitability Score:
1.8
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Vendors

  • linux

Products

  • linux kernel
Technical Analysis