SB20260816245 - Missing Release of Resource after Effective Lifetime in Linux kernel openvswitch

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Main Vulnerability Database SB20260816245

SB20260816245 - Missing Release of Resource after Effective Lifetime in Linux kernel openvswitch

Published: August 16, 2026

Security Bulletin ID SB20260816245
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-74464)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper resource management in ovs_flow_key_update() handling within net/openvswitch/actions.c when processing connection tracking actions on a packet whose flow key becomes invalid and unparseable. A local user can trigger flow key update failure with a specially crafted packet and action sequence to cause a denial of service.

This requires the packet to become unparseable after actions are applied to a previously parseable skb.


Remediation

Install update from vendor's website.

References