CVE-2026-98614

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

sctp: avoid livelock while updating retransmit path

sctp_assoc_update_retran_path() can loop forever when every remaining

transport, including retran_path, is SCTP_UNCONFIRMED: the state check

runs before the wraparound test, so the loop cannot observe that it has

completed a full pass.

Fix this by considering a transport only when it is not UNCONFIRMED,

then checking whether the walk has returned to retran_path. This makes

the full-pass termination independent of the transport state while

preserving the existing fallback selection semantics.

Also restore the NULL guard around the retran_path assignment. In the

all-UNCONFIRMED case there is no eligible replacement transport, and

installing NULL would leave later retransmit-path users and the debug

print with a NULL path.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References