CVE-2026-23139

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

14/02/2026

Last modified:

17/03/2026

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conncount: update last_gc only when GC has been performed Currently last_gc is being updated everytime a new connection is tracked, that means that it is updated even if a GC wasn&#39;t performed. With a sufficiently high packet rate, it is possible to always bypass the GC, causing the list to grow infinitely. Update the last_gc value only when a GC has been actually performed.

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::::::::	5.19 (including)	6.1.161 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.121 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.12.66 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.18.6 (excluding)
cpe:2.3:o:linux:linux_kernel:6.19:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.19:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.19:rc3::::::
cpe:2.3:o:linux:linux_kernel:6.19:rc4::::::

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

CVE-2026-23139

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools