CVE-2026-98846
kernel: sctp: check RCV_SHUTDOWN after the sendmsg connect wait
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 18, 2026
Updated · October 24, 2026
Description
A flaw was found in the Linux kernel's Stream Control Transmission Protocol (SCTP) subsystem. A race condition can occur when an SCTP socket is shut down concurrently while waiting for a connection, causing an association structure to be freed while still in use. A local user could exploit this flaw to trigger a use-after-free condition, resulting in a Denial of Service (DoS) via a system crash or potential privilege escalation.
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-825 · Expired Pointer Dereference