CVE-2024-27390

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

01/05/2024

Last modified:

18/09/2025

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down() As discussed in the past (commit 2d3916f31891 ("ipv6: fix skb drops in igmp6_event_query() and igmp6_event_report()")) I think the synchronize_net() call in ipv6_mc_down() is not needed. Under load, synchronize_net() can last between 200 usec and 5 ms. KASAN seems to agree as well.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	5.13 (including)	5.15.153 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.83 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.23 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.7.11 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.8 (including)	6.8.2 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2024-27390

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools