Vulnerability in Kernel: sctp: do asoc update earlier in sctp_sf_do_dupcook_a

Kernel Updated 02 Oct 2025

Summary

31/05/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000413: sctp: do asoc update earlier in sctp_sf_do_dupcook_a. Affects Kernel versions >= a204d577be70e0a0a6023cf1b9859c9ebffaeecd, < b1b31948c0af44628e43353828453461bb74098f. No fix is published. How to fix ↓

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Background

The Kernel is a critical component of the Linux operating system that manages system resources and facilitates communication between hardware and software. It provides essential functions such as process management, memory management, and device drivers. The vulnerability in question affects the Stream Control Transmission Protocol (SCTP) module within the Kernel. SCTP is a transport layer protocol that offers reliable, message-oriented communication between hosts. This vulnerability specifically relates to the handling of duplicate cookies in the SCTP module.

Vulnerability Detail

The vulnerability arises from a delay in updating the association (asoc) structure in the sctp_sf_do_dupcook_a function of the SCTP module. By not updating the asoc structure earlier, an attacker may be able to exploit this delay to perform unauthorized actions or gain elevated privileges. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in the Linux Kernel version v5.4.120 by commit b1b31948c0af44628e43353828453461bb74098f. However, it was introduced in version v5.4.41 by commit a204d577be70e0a0a6023cf1b9859c9ebffaeecd.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

No workaround has been mentioned for this vulnerability.

Conclusion

In conclusion, the vulnerability in the Kernel's SCTP module could potentially lead to unauthorized actions or privilege escalation. It is crucial to update the Linux Kernel to version v5.4.120 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.

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