CVE-2024-26677
kernel: rxrpc: Fix delayed ACKs to not set the reference serial number
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 2, 2024
Updated · November 21, 2025
Description
A vulnerability in the Linux kernel affects the Remote Procedure Call over the Rx protocol (rxrpc) subsystem. The flaw involves an issue with delayed acknowledgments (ACKs) in which the system mistakenly sets the reference serial number. This reference serial number is not valid in this context and cannot be used as a Round Trip Time (RTT) reference, leading to potential disruptions in network communication.
Statement
If exploited, this vulnerability could lead to denial of service (DoS) attacks or other security breaches by causing network instability.
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
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 4CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE not specified