CVE-2024-40931
kernel: mptcp: ensure snd_una is properly initialized on connect
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 12, 2024
Updated · October 31, 2026
Description
A vulnerability was found in the Linux kernel's match component in the initialization of the snd_una variable while establishing a connection. The issue arises when retransmission occurs after a fallback, leaving the snd_una sequence number uninitialized, leading to unpredictable behavior and potential denial of service.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-400 · Uncontrolled Resource Consumption