SB2025050493 - Improper resource shutdown or release in Linux kernel mptcp 

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Main Vulnerability Database SB2025050493

SB2025050493 - Improper resource shutdown or release in Linux kernel mptcp

Published: May 4, 2025 Updated: May 10, 2025

Security Bulletin ID SB2025050493
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Improper resource shutdown or release (CVE-ID: CVE-2023-53072)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to failure to properly release resources within the subflow_hmac_valid(), subflow_ulp_fallback(), mptcp_subflow_queue_clean() and subflow_ulp_release() functions in net/mptcp/subflow.c, within the __mptcp_close_ssk(), mptcp_sync_mss(), __mptcp_close_subflow(), mptcp_worker(), mptcp_sk_clone(), mptcp_accept() and mptcp_stream_accept() functions in net/mptcp/protocol.c. A local user can perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References