U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-63971 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: sctp: fix race between sctp_wait_for_connect and peeloff sctp_wait_for_connect() drops and re-acquires the socket lock while waiting for the association to reach ESTABLISHED state. During this window, another thread can peeloff the association to a new socket via getsockopt(SCTP_SOCKOPT_PEELOFF), changing asoc->base.sk. After re-acquiring the old socket lock, sctp_wait_for_connect() returns success without noticing the migration — the caller then accesses the association under the wrong lock in sctp_datamsg_from_user(). Add the same sk != asoc->base.sk check that sctp_wait_for_sndbuf() already has, returning an error if the association was migrated while we slept.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0e0d5bc76fd4267a71334fcc8f1a5fbcf997845d kernel.org
https://git.kernel.org/stable/c/6140cfa721451fa6e18e134e709703c2bf34d0fb kernel.org
https://git.kernel.org/stable/c/634a9af8a26a84d8b0d7b3b643204b344b42d9fb kernel.org
https://git.kernel.org/stable/c/68667ee4c7dadf7f63167234e2a1af09b3f7874e kernel.org
https://git.kernel.org/stable/c/7d2038d4b80166f7bead8d07eba3b97405816c21 kernel.org
https://git.kernel.org/stable/c/8e9b56051d24540cfbf39194618708c4a7633549 kernel.org
https://git.kernel.org/stable/c/bcfeac79af740735ace44008b4a11b8e5add20f5 kernel.org
https://git.kernel.org/stable/c/f14fe6395a8b3d961a61e138ad7b36ba3626dd4e kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-63971
NVD Published Date:
07/19/2026
NVD Last Modified:
07/20/2026
Source:
kernel.org